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PTFE Lip Seals

There are 3 types of PTFE seals:
1. Molded
This type is the most common having superseded most clamped design seals, particularly for engines, due to technical and cost benefits. The PTFE element is first etched, then bonded during the molding operation, ensuring a very secure static seal compared to the clamped designs. A selection of rubbers can be used to suit the application, but the most common is polyacrylic (ACM).
2. Clamped
The clamped design offers many designs options, where small quantities can be produced with minimal tooling cost. These are now used mainly for smaller seals or where there is pressure, such as for compressors and small pumps. With this design, the PTFE is clamped between two shells, and a rubber gasket. The seal OD is usually metal, either ground or with a sealant applied.
3. Crimped-Solid body
This design is used primarily for food, pharmaceutical applications, and motorsports. The PTFE is fitted into a groove, then the metal crimped into the PTFE. Typical metal cases’ materials are Stainless Steel or Aluminum.A&S Seals Co., Ltd. is a global supplier of PTFE Lip Seals, CHO Seals, A&S Seals and many more. focusing on the various brands of seals supply
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