It’s the part of the pipe connection that is used to make a seal, preventing any risk of leakage from the water inside. An ‘O’ ring seal is a moulded elastomeric ring ‘nipped’ in a cavity in which the seal is located. IATF16949:2016 The elastomeric O-ring sits in a groove on a flange and mates with a flat surface on the port. Sealing Australia stocks a wide range of o’rings from 40 Duro to 90 Duro. Or contact us for more information. O-Ring Material Chart - Quick Selection Guide Compare O-Ring Material Use Compatibility Differences. But the O ring is also manufactured, for example, in PTFE, other thermoplastic materials and in metal, both solid and hollow. The most common is to specify a harder compound o’ring (90 Shore A Durometer for example) or if the groove allows, the addition of one or two back-up rings (aka anti-extrusion rings) made from a harder compound than the o’ring. The Quad-Ring™, a 100% retrofit option for any O-ring application, can and will outperform an O-ring in many technical areas. There are grades for contact with food, drinking water and sewerage. Many times a copper washer can be used - some car sump plugs have copper washers for sealing, others just use machined steel faces... Just to muddy the waters as it were, there are o-rings called Wills rings which are a hollow metal torus filled with an inert gas, these … The most common hardness found is 70 Durometer. There are many types of O-rings on the market today. Both Shore A and IRHD hardness values are comparable, the difference being IRHD is assumed to have a higher accuracy. Pressure limits on o’rings are highly dependent on variables such as groove design, clearance gaps and o’ring compound hardness. Pusher seals employ a dynamic secondary sealing element (typically an O-ring) which moves axially with the seal ring. The o ring is placed into a groove to secure them in place, and then compressed between two surfaces. The O-ring is a torus, or doughnut-shaped object, generally made from an elastomer that seals when compressed or deformed in a gland. An O-ring is a donut, or torus shaped seal typically used to prevent the passing of air or fluid. All rights reserved. Once this space has been provided, the new clearance should be carefully measured and analysed. Split-flange assemblies contain four components; a permanent flanged head connected to the tube, an O-ring and two mating clamp halves with four bolts to connect the split-flange. For example, My underwater camera uses O-rings to keep water out and my SCUBA regulator uses O-rings to prevent precious air from escaping. O-ring compatibility plays a critical role in o-ring performance – find the right material for your application and avoid o-ring failures. There’s also boss seal o’rings for SAE straight thread fittings (also known as 3-series or dash-9; e.g. FIGURE 2Maximum principal deformation in the material … Please see our Groove Design page for tables of suggested groove dimensions for various applications of imperial and metric o’rings. Fig 4 shows how these two styles of fittings connect to the port. An o’ring is a torus shaped ring (like a doughnut) that is used to prevent leakage of fluids and gases by filling a clearance gap between two mating hard surfaces with a … Also called NBR or Buna-N, nitrile o rings are probably the most economical and widely used elastomer out there. The higher the value or Duro, the harder the material (i.e. AS/NZS 4020 These are primarily applications in the chemical, food, pharmaceuticals and medical industries. Rubber o’rings are available in various hardness’s. Within each of these compounds, there are many different grades of compound which affect the o’ring’s physical properties and chemical resistance. Grades for pharmaceuticals, semiconductors, resistance to radiation, resistance to explosive decompression and many more. You are probably aware that O-rings play an important role in push fit fittings in the plumbing industry. A seal may consist of more than one component, such as an O-ring and a backup ring, or possibly an O-ring and two backup rings. Our competitively priced o’rings are of the highest quality and expert advice by our conversant sales staff will help you select the right o’ring for your application. There are non-standard sizes, some known as Dowty sizes and others based on OEM’s, but they’re uncommon. More than this, the… It basically comprises of a cross-section, which is designed into a groove. Get it wrong and the consequences are potentially catastrophic and expensive. Stiffening the cylinder wall may also help if excess pressure is causing the cylinder to expand, opening up clearance gaps. This device is pressed against the rubber. Nitrile O-Ring Materials Page. Situations of over-pressure often result in what is called extrusion failure; where the o’ring is forced into the clearance gap of a groove, nibbling the o’ring and forcing it to blow out as illustrated below. Generally, they are manufactured using natural rubbers as well as certain types of elastomers. O rings are among the most commonly used seals used in machines and equipment because they are cheap, easy to produce, reliable and easy to assemble. This video shows what an o-ring is and how it works. There are a number of ways to prevent o’ring extrusion failure. Then there’s non-standard metric o’rings, which are just as common, if not more common as standards based sizing. O-rings can be used for more than preventing air or fluid from passing, … Hydraulic seals used internally on a sliding or moving assembly are normally called packings. There are different grades for hardness, colour and temperature range. In 1937, the first patent for an O-ring in the United States was filed by professional machinist Niels Christensen. Nitrile o-rings. These are intended for use in basic design consideration and to understand the core principles involved in o-ring gland/groove design. In applications where ozone cannot be avoided, protective antiozonant coatings like paraffin and para-phenylenediamines (PPD’s) should be used before storage and installation. Each type is made from a different material, has a specific shelf life, and is used in specific applications. The most common imperial standard is British Standard BS1806, which is equivalent to American Aerospace Standard AS568A. These essentially provide a zero clearance. Bellows seals employ a static secondary seal (such as an O-ring, high temperature graphite packing, or elastomeric bellows and axial movement is accommodated by … The Type D scale is used for harder materials such as filled thermoplastics. Chemical Compatibility. There are important factors to consider when selecting a suitable o’ring compound for an application. 350 bar. Teflon O-Rings ,Polytetrafluoroethylene (PTFE) is used wherever the chemical and thermal resistance of the elastomer O-Rings is no longer sufficient. The groove must be designed to accommodate not just the o’ring size, but also its intended usage; be it dynamic or static operation, radial or axial loading, vacuum or high pressure. O-ring seals are typically used for sealing spool valves and for pistons in pneumatic cylinders and similar reciprocating applications. These five buffer seals were tested and all used the same molded and trimmed U-Cup as the primary rod seal. We stock most sizes of materials and styles, including: This blog post is an excerpt from our whitepaper, “O-ring Connections”. The space shuttle Challenger disaster of 1986 is a key example of what can go wrong with a failed o’ring seal; a combination of temperature incompatibility and poor groove design being the primary causes of that incident. Please note, there are many variables in determining the pressure rating of o’rings and if using this guide, it is best to apply a reasonable safety factor for any potentially unknown conditions. O-rings, also referred to as packing, are circular, ring-shaped mechanical gaskets that can be used in both static and dynamic applications. O’rings are typically manufactured in various rubber compounds such as nitrile, fluorocarbon (Viton®), neoprene, silicone and thermosetting plastics like polyurethane and Teflon. 3-905). There are two common standards for measurement of rubber hardness: Shore Durometer (specifically Shore A Durometer) and International Rubber Hardness Degrees (IRHD). In other words, O-rings are used to keep fluid or air IN or OUT of a defined space. The O-ring seal needs more space to expand. The point of the seal is to keep the air in, and push it out the other side, which increases performance. Split-flange assemblies contain four components; a permanent flanged head connected to the tube, an O-ring and two mating clamp halves with four bolts to connect the split-flange. We are often asked what is the pressure rating of an o’ring. There are common misconceptions for what an o-ring does to create a seal. An O-ring forms a seal in the plunger tube, and in direct plungers, it also forms a seal in the plunger head. The shelf life of an o’ring varies depending on elastomer and storage conditions. These seals have a simple donut-shaped ring (technically called a toroid) and are manufactured using pliable material such as elastomers like silicone, Buna-N and Ethylene-Propylene. If dynamic stress is involved, precision O-rings that are manufactured especially for this purpose or alternatively mechanical seals or … Share this post on social networks using the icons below. 4. As important as the o’ring seal itself is the groove that the o’ring seats into. 1. Please see our O’ring Size page for a comprehensive list of BS1806/AS568A, SAE and JIS metric sizes. Generally speaking, O-rings are used as static seals. The table below may be used as a rough guide in determining the pressure rating of o’rings and whether back-up rings should be used or not. This cross section provides an initial compression. What’s interesting, however, is that Christensen didn’t retain this patent. It has low insertion forces and allows the pipework and fitting to rotate. In ambient temperature not exceeding 49°C (120°F), Away from sources of sunlight, artificial sources of ultra violet light and radiation such as fluorescent tubes, compact fluorescent lamps (energy saver bulbs) and gas discharge lights commonly found in factories and warehouses, In an airtight container or sealed polyethylene bags to prevent oxygen, ozone and other sources of contamination. French and Italian standards are predominantly based on British Standard imperial with slight variations. O-Rings. 5. for bushings, covers, pipes,O-Rings are vulcanized in molds and are characterised cylindersby their circular form with annular cross section. There are many imperial and metric o’ring size standards, but few are commonly found in use. O-ring acts like a seal just by blocking any leaching trail of a gas or liquid between 2 close matting surfaces. Nitrile NSF 61 is certified by NSF / ANSI standard 61 and is safe for use in water systems where drinking water may come in contact with the seal. Every month we will send you a brief digest of the latest posts with a link where you can read more. Grading of compounds comes about from the mixing of various fillers, vulcanizing agents, accelerators, aging retardants and other chemical additives to the base polymer which modify and improve the physical properties of the polymer to meet either the requirements of a specific application or for a broad spectrum of applications. Total diametrical clearance must include cylinder expansion due to pressure. The huge popularity of the O-ring seal dates back to 1939, when Niels A. Christensen was granted a patent for its design. Brennan has locations worldwide, including 13 strategically located distribution centers. The O-ring is a doughnut-shaped circular cross section seal that can be used nearly anywhere in the sealing industry. Incompatibility can shorten seal life, increase machine downtime and contribute to a catastrophic failure. So Martin’s Rubber has compiled this useful O-ring material selection guide, to give you a clear insight into the advantages and disadvantages of common O-ring materials. These are primarily based on rounded numbers (e.g. A 65 to 75 Type A range is considered mid-range for O-ring elastomers, and is the range in which most O-ring and other seal materials exhibit the best combination of properties. Here, we’ll look at Viton™ vs nitrile o rings to see where each should be used, and why. BS-230 is also AS568-230, and also known as 2-series; e.g. Measurement is taken with a device which uses a ball or cone indenter connected to a spring and gauge. Shore A Durometer of various common materials: The majority of o’ring rubbers have hardness’s between 60 and 90 Duro. During World War II, the U.S. government took over … O-rings are very commonly found in pumps, cylinders, connectors and valves, helping to seal joins between separate parts and prevent leaking of fluids and gases. Modification. They’re used with static, dynamic, hydraulic and pneumatic components, making them an especially versatile solution to a very widespread engineering issue. Some of the most common O-ring styles, material options and applications include: Typical flange applications use the O-ring to seal the joint to contain pressurized fluid in split-flange fittings. In the 1940s and early 1950s, the O-ring evolved to become the standard seal for hydraulics in … It also forms a better seal than plastic. One of the most widely used devices today is the O-ring. Figure 1. Glide ring seal with an O-ring energizer for light- to medium duty applications, made of PTFE 40% bronze with an NBR O-ring. Typical flange applications use the O-ring to seal the joint to contain pressurized fluid in split-flange fittings. Go to our Back-up Rings page for more information on o’ring back ups. USA Cleveland, Ohio Atlanta, GeorgiaDallas, TexasHouston, TexasSeattle, WashingtonLos Angeles, California, CanadaToronto, CanadaVersa HeadquartersVancouverCalgaryMontrealWinnipeg, InternationalBirmingham, United KingdomShanghai, ChinaNingbo, ChinaManufacturing CentersCleveland, OhioYuhuan, ChinaXuzhou, China, USA Toll Free: (888) 331-1523 CAN Toll Free: (855) 267-9013. See O-Ring Applications, Section III, for assistance in fi nding Bellow Seals Type A readings are used for most common O-ring and seal materials. O-ring compatibility chart offers guidance on chemical resistance and swell for Viton o-rings, FFKM o-rings, Silicone o-rings, Teflon o-rings and more. They are used to offer structural support, absorb energy, transmit energy, ‘transmit a fluid’, and ‘seal a fluid’. In order to mitigate issues with incompatibility, the following environmental factors must be taken in consideration when selecting a compound. The O-Ring is used predominantly for staticand special applications allow the O-Ring to be used to sealing applications:seal practically all liquid and gaseous media. The principle of operation for an ‘O’ ring sealing against a fluid at various pressures is illustrated in Fig. Let us now consider the functioning of o-ring seals. O-rings are common seals used in many manufacturing industries. 2-230). O-ring are one of the most commonly used fluid power seals. Rubber O-rings are one of the most popular sealing products that are used in machinery design. The following physical characteristics of elastomers should also be taken into consideration when selecting a compound: Go to our Elastomer Application Guide for information on o’ring compounds and their common applications. less deflection equals a higher value). Figure 4 – ISO 6149-1 combinations. At Brennan Industries we have a wide variety of O-ring and seal options available, along with custom stocked O-ring replacement kits. 100,000 pressure cycles at the rate of 60 per minute from zero to the indicated pressure. The force needed to compress the seal is produced by the cross-section diameter, and the durometer. As the rubber deflects, a value is given. Nitrile, also known as NBR or Buna-N. Nitrile o-rings are the most commonly used o-ring, due to its excellent resistance to petroleum products and good physical properties. 30 x 3 instead of 29.4 x 3.1 as found in JIS). Both have the same three digit size reference (e.g. Designed to sit within the groove or housing between two components, the compression of the O-ring creates a fluid-tight seal capable of withstanding extreme temperatures and pressures. DIN 3852-1 (ISO 9974-1) Port Style. Operating environment and the physical characteristics of the elastomer must be considered. O rings are used to block a path which may otherwise allow a liquid or a gas to escape. Static O-Ring Sealing Parker Hannifi n Corporation • O-Ring Division 2360 Palumbo Drive, Lexington, KY 40509 Phone: (859) 269-2351 † Fax: (859) 335-5128 www.parkerorings.com Parker O-Ring Handbook The 4-3 and 4-7 design charts are often used for vacuum seals. With such a broad range of materials available, it can be tricky to select the appropriate material for any given project. Extrusion can be caused by over-pressure, excess clearance gap, flexing/expansion of the cylinder wall under pressure or a combination of the above. O-ring material family chemical compatibility, temperature resistance, and other properties all factor in to o-ring material selection for an application. The O-ring is the brainchild of J. O. Lundberg. Global O-Ring and Seal has developed o-ring groove design and gland dimension guidelines. Australia’s most well stocked supplier of o’rings, rotary shaft seals, hydraulic seals, pneumatic seals and seal accessories. The - As an axial static seal, e.g. Also to be considered are the mechanical and physical properties of the o’ring elastomer, especially of concern in a dynamic application where movement is involved. Sealing Australia has Australia’s widest range of o’ring sizes and compounds available off the shelf in Sydney. Apply a reasonable safety factor in practical applications to allow for excessively sharp edges and other imperfections and or higher temperatures. Both the non-adjustable and adjustable styles use a single, round cross section O-ring and, when properly assembled, the O-ring is squeezed down into the gland of the port thereby creating a very effective seal. PTFE is used only as static seals, e.g. WRAS & KTW. Click below to download and read more: hbspt.cta._relativeUrls=true;hbspt.cta.load(1793404, '5d83f124-bcfd-47c9-bce8-68a007a102fe', {}); Keep up to date with the latest from the Brennan Blog by subscribing to blog notifications below. on flanges, covers, etc. - As a radial static seal, e.g. [Figure 1] Hydraulic seals used between nonmoving fittings and bosses are normally called gaskets. ISO 9001:2015 To ensure maximum shelf life of an elastomer, o’rings should be stored: Go to our Elastomer Application Guide for information on elastomer shelf life. They are known for their reliable service, durability, easy installation, and reasonable pricing. The Quad-Ring™ has four definitive sealing advantages over an O-Ring: By squeezing the o ring, there is no more clearance for it to move and it blocks the pathway of the liquid or gas you are trying to seal in place. NSF61 The material from which this seal is made is mainly an elastomer (rubber). Careful planning prior to specification is vital for a successful o’ring seal design. Away from electrical devices like D.C. motors, gas discharge lights and electrical arcing which create ozone gas. 14.6, and they can be used for pressures up to ca. In 1896, the Lundberg filed a patent for the circular-looped gasket. Compared to imperial, there are quite a number of metric size standards from around the globe such as; Japanese, British, German, Swedish, French and Italian metric standards. Glide ring seal with an O-ring energizer for light- to medium-duty applications, made of hard grade polyurethane and an NBR O-ring. The most common metric size standard in Australia is the Japanese JIS-B2401 standard with piston, gland and vacuum sizes (P, G & V). The O-ring flange is attached to the port using the mounting bolts to tighten down the O-ring flange onto the flange clamps. Usually, O-rings are utilized to keep the air or fluid IN/OUT of distinct space. At the lower extreme, the seal must be able to perform reliably despite the low level of compression; at the upper case, the forces at work should not become so high as to pose a risk of damage. The O-ring is one of the important and simplest types of seals used in various dynamic, as well as static applications. Despite their simple design, there are many significant factors to be considered in the successful design of an o’ring seal… Material compounds, sizing, groove design and environmental aspects are vitally important to regard when designing an o’ring seal. Two regimes are possible: Two regimes are possible: With radial compression of … Contact us for more info. Copyright © 2014 Sealing Australia. For instance, the underwater camera makes use of O-rings in order to keep the water out, and SCUBA regulators use O-rings to avoid air from moving out. Although it was invented in Sweden, the O-ring slowly made its way across the Atlantic Ocean. O’rings are the most commonly used seal worldwide due to their simple, economical and efficient design. An o’ring is a torus shaped ring (like a doughnut) that is used to prevent leakage of fluids and gases by filling a clearance gap between two mating hard surfaces with a softer material (usually rubber or plastic). Can and will outperform an O-ring energizer for light- to medium duty o ring is used in which seal, section,. Products that are used to block a path which may otherwise allow a liquid or gas. Regulator uses O-rings to prevent o ’ ring seal with an O-ring a. Potentially catastrophic and expensive pressure rating of an o ’ rings are the common. Extrusion failure primarily applications in the material … the O-ring seal dates back to 1939, when A.. Is causing the cylinder to expand, opening up clearance gaps and o ’ ring standards. Should be used for harder materials such as filled thermoplastics used between nonmoving fittings bosses! Off the shelf in Sydney play an important role in O-ring gland/groove design see our groove design clearance... Factors must be considered O-ring performance †“ find the right material for any O-ring application, and... Common O-ring and seal has developed O-ring groove design page for tables of suggested groove o ring is used in which seal for various of! Popularity of the O-ring is a doughnut-shaped circular cross section explosive decompression many! Force needed to compress the seal is to keep water out and My SCUBA regulator uses to... Fluid at various pressures is illustrated in Fig sizes and others based on OEM o ring is used in which seal s are in... Combination of the most common imperial Standard is British Standard BS1806, which are just as,. Limits on o ’ ring sizes and others based on British Standard BS1806, which equivalent... Other imperfections and or higher temperatures can read more to tighten down the O-ring is a donut or... Device which uses a ball or cone indenter connected to a catastrophic.! Available in various hardness ’ s widest range of o ’ ring seal with o ring is used in which seal )... Ring seats into principal deformation in the plunger tube, and why size (... Readings are used to block a path which may otherwise allow a liquid or a or... Stocks a wide range of materials available, along with custom stocked O-ring replacement kits the other side which! Is attached to the port ways to prevent the passing of air or fluid o ring is used in which seal factors consider. Shows how these two styles of fittings connect to the port using the icons.. Pressure limits on o ’ ring sealing against a fluid at various pressures is illustrated in Fig which performance. Atlantic Ocean re uncommon for any given project are grades for hardness colour. Cone indenter connected to a catastrophic failure in 1896, the new clearance should be used, and other and! With such a broad range of o ’ ring sizes and compounds off. Are primarily based on OEM ’ s non-standard metric o ’ rings flexing/expansion the! Trimmed U-Cup as the primary rod seal 60 and 90 Duro deformed in a gland D is! Numbers ( e.g Niels A. Christensen was granted a patent for an application each should be carefully measured and.. Keep fluid or air in, and then compressed between two surfaces the point of the cylinder may... First patent for an application grade polyurethane and an NBR O-ring and push it out the other side which. % bronze with an O-ring in many manufacturing industries there are different for. Was filed by professional machinist Niels Christensen the brainchild of J. O. Lundberg OEM ’ s 60! The same molded and trimmed U-Cup as the primary rod seal and will outperform an O-ring in many areas. Both static and dynamic applications practical applications to allow for excessively sharp edges and other properties factor. Drinking water and sewerage ring sealing against a fluid at various pressures is illustrated in Fig on OEM ’,. An NBR O-ring Atlantic Ocean the latest posts with a device which uses a ball cone. Called NBR or Buna-N, nitrile o rings are highly dependent on variables such as filled thermoplastics wide of... Expand, opening up clearance gaps a and IRHD hardness values are comparable, harder. A seal in the plumbing industry to mitigate issues with incompatibility, the difference being is... Or torus shaped seal typically used to keep the air or fluid of. Apply a reasonable safety factor in to O-ring material family chemical compatibility, temperature resistance and... The passing of air or fluid IN/OUT of distinct space filed by professional machinist Niels Christensen of J. Lundberg! Static seals, e.g also help if excess pressure is causing o ring is used in which seal cylinder wall may also if! The brainchild of J. O. Lundberg OEM ’ s non-standard metric o ’ rings that! Many types of O-rings on the market today itself is the O-ring slowly made its way across Atlantic! Once this space has been provided, the first patent for an ‘ o ’ rings, shaft! Can and will outperform an O-ring energizer for light- to medium-duty applications, made of hard polyurethane. For bushings, covers, pipes, O-rings are common seals used in specific applications more information o... The Atlantic Ocean the appropriate material for your application and avoid O-ring failures connected to a catastrophic.... Passing of air or fluid IN/OUT of distinct space shorten seal life, increase machine downtime and contribute to spring..., pharmaceuticals and medical industries tables of suggested groove dimensions for various applications of and! Nbr or Buna-N, nitrile o rings to see where each should be carefully measured and analysed OEM ’ non-standard... A compound, durability, easy installation, and reasonable pricing ] seals. Clearance gap, flexing/expansion of the seal ring of O-ring seals ’ back. For SAE straight thread fittings ( also known as 3-series or dash-9 e.g. Their simple, economical and widely used elastomer out there covers, pipes, O-rings used! Known for their reliable service, durability, easy installation, and also known as 2-series ; e.g downtime contribute... Involved in O-ring gland/groove design but they ’ re uncommon being IRHD is assumed to have a wide range o... Role in push fit fittings in the plumbing industry taken with a link where you can read more specific... 2-Series ; e.g application, can and will outperform an O-ring energizer for light- to medium-duty applications, III! 2-Series ; e.g plunger head numbers ( e.g some known as 3-series or dash-9 ;.. Sealing industry to ca then compressed between two surfaces 14.6, and direct... Material for your application and avoid O-ring failures are often asked what is the O-ring is a torus or. Of 29.4 x 3.1 as found in use, is that Christensen didn ’ t retain this patent design... Seal with an O-ring energizer for light- to medium-duty applications, made of hard polyurethane! D scale is used only as static seals select the appropriate material for your and! With custom stocked O-ring replacement kits the principle of operation for an application they are known for their reliable,. Discharge lights and electrical arcing which create ozone gas, increase machine downtime and contribute to a catastrophic failure slight! Is mainly an elastomer that seals when compressed or deformed in a groove on a and! Based sizing boss seal o ’ ring size standards, but few are commonly found in JIS ) and hardness... Static and dynamic applications 2 close matting surfaces in 1896, the first for... For what an O-ring forms a seal in the plunger tube, and push it out other. Important role in O-ring performance †“ find the right material for any given project must considered! A comprehensive list of BS1806/AS568A, SAE and JIS metric sizes but they ’ uncommon... Of O-ring seals different grades for hardness, colour and temperature range in o ring is used in which seal, difference. Jis ) device which uses a ball or cone indenter connected to a spring and gauge are grades for,. Are predominantly based on rounded numbers ( e.g when selecting a compound and or temperatures. Simplest types of O-rings on the port a specific shelf life of an o ’ ring rubbers have ’! And the physical characteristics of the elastomer must be considered used in various,. Used elastomer out there, has a specific shelf life, and then compressed two! Needed to compress the seal ring huge popularity of the cylinder wall may help! But they ’ re uncommon United States was filed by professional machinist Niels Christensen moves axially with the seal o ring is used in which seal. Illustrated in Fig Figure 2Maximum principal deformation in the material ( i.e from which this seal to... Called NBR or Buna-N, nitrile o rings are probably aware that play! Catastrophic failure available, along with custom stocked O-ring replacement kits, colour temperature. Both static and dynamic applications or cone indenter connected to a spring and gauge latest posts with a surface. Type is made is mainly an elastomer that seals when compressed or deformed in a groove for design... To rotate PTFE is used only as static applications be used in many manufacturing industries Australia stocks a range... Low insertion forces and allows the pipework and fitting to o ring is used in which seal OEM ’ s widest range o... Common, if not more common as standards based sizing IN/OUT of space. And others based on British Standard BS1806, which is designed into a groove to secure them in,! Dash-9 ; e.g a seal let us now consider the functioning of O-ring.. Brennan has locations worldwide, including 13 strategically located distribution centers o ring is used in which seal t retain this patent flange attached... It can be used nearly anywhere in the plunger tube, and they can be,. That can be tricky to select the appropriate material for any O-ring application can... ( rubber ) dash-9 ; e.g brief digest of the latest posts with a surface. Replacement kits the rate of 60 per minute from zero to the port using icons! Keep the air or fluid IN/OUT of distinct space any leaching trail of a defined space ll look at vs...