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O ring is a type of seals with solid rubber material or PTFE and an O-shaped cross section.
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50NBR HNBR FKM PTFE O ring
O ring is a type of seals with solid rubber material or PTFE and an O-shaped cross section. Because its cross section is O-shaped, it is called O-shaped rubber ring. It is one of the most widely used hydraulic and pneumatic transmission systems.
O-ring is a circular rubber ring with circular section. It is mainly used for mechanical parts to prevent the leakage of liquid and gas media under static conditions. In some cases, it can also be used as a dynamic sealing element for axial reciprocating motion and low-speed rotating motion. Different materials can be selected according to different conditions.
For different kinds of fixed seal or dynamic seal applications, O-ring is both effective and economical.
O-ring is a two-way sealing element. The initial compression in radial or axial direction during installation endows the O-ring with its own initial sealing ability. The total sealing force is composed of the sealing force generated by the system pressure and the initial sealing force, which increases with the increase of the system pressure. O-rings play an outstanding role in static sealing occasions. However, O-rings are often used in appropriate dynamic situations, but they are limited by the speed and pressure at the seal.
Material: NBR/ HNBR/ VITON/ AFLS/ EPDM/PU/FFKM/PTFE
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Advantages:
1. Preventing leakage of fluids. |
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Working Conditions |
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Temperature |
Medium |
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-32 to +204℃ (depends on different material) |
oil, water, air and gas etc |
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Size:
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Piston seals are working to seal in fluid, thus preventing the flow of fluid across the piston, allowing pressure to build up on one side of the piston.
The BVR series is made of a canted level spring and a polymer jacket, which is mainly used as a seat seal.
Swivel joint ball plug is working together with hammer union seals, to seal the balls of high pressure elbows and grease.
Oil-free Air compressor PTFE piston cup seals extensively used for steam, oil, water, and other chemical applications.
JST's metal end cap seal is elastomer bonded onto 2 steel caps. This provides high level of extrusion resistance.
Bidirectional high-pressure ball valve seat seal is a type of seat sealing that can withstand bidirectional pressure, with good low-temperature performance and airtightness, and is widely used in 6D ball valves.
In LNG operations, valves can regularly encounter temperatures below -320 F (-196 C) and pressures above 750 pounds per square inch (psi). They are also subjected to periodic variations in temperatures known as “thermal cycling,” which can result in hardware expansion as well as shrinkage and material stresses. These factors make reliable, long-term valve operation an engineering challenge.
Rotary shaft seals with PTFE ring have been specially developed for use in harsh conditions. They are used when shaft seals with classic elastomer lips reach their performance limits.
Piston seals are working to seal in fluid, thus preventing the flow of fluid across the piston, allowing pressure to build up on one side of the piston.
The BVR series is made of a canted level spring and a polymer jacket, which is mainly used as a seat seal.
Swivel joint ball plug is working together with hammer union seals, to seal the balls of high pressure elbows and grease.
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