PTFE Seals
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Low friction - This type usually consists of a metal outer case, metal inner case, elastomeric gasket, and PTFE element. The metal cases compress the gasket and the sealing element to a predetermined load and are crimped together by rolling or pressing. | |
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Solid Body - The solid body seal design incorporates the PTFE element rolled or pressed directly into a CNC machined case. The PTFE element can also be positioned directly into a housing as an end plate or casing with integral seal as a single item. | |
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Hydrodynamic Elements - The PTFE sealing element can feature a unique CNC machined scroll that acts as a positive pump transferring fluid away from the sealing lip increasing the life of the seal further. Pioneer Weston select the best scroll pattern for each individual application. This feature is only available for unidirectional shafts. | |
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Variants
- PTFE seals can be manufactured with various features to improve fitting and keep out environmental contaminants. These are typically the inclusion of ‘O’-rings on the OD, rubber covering shells, and adding supplementary dust lips and wipers. |
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Materials |
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| Shells and bodies are available in;- Stainless Steel, Hastelloy, Aluminium, Inconel, Mild Steel, Titanium, Brass and Bronze | ||
| PTFE elements are available in;- Molybdenum, Carbon, Ekonol, Glass, Graphite and Virgin PTFE. Specialist blends are available for high duty applications. | ||
| Gaskets and rubber covered materials include;- Silicone, Fluoro-elastomer, Nitrile, Fluorosilicone and Ethylene Propylene. | ||
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OD Sealants are sometimes used to provide better sealing between the OD of the seal and the bore of the housing. The sealant fills over imperfections in the bore surface. Colours available are Red, Blue and Green. |
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