PTFE coated encapsulated O-rings are designed to combine the sealing properties of the rubber O-ring with the chemical resistance of PTFE.
They are generally manufactured from FKM or silicone rubber and are coated in a thin molded layer of PTFE FEP or PFA.
- This provides a unique seal popular for high friction and aggressive chemical applications.
- FEP encapsulated O-rings are our most common and are resistant to solvents and chemicals (except for alkaline metals, fluorine and some halogenated compounds at high temperatures).
- They have a low coefficient of friction and a very low permeability to gases making them suitable
- for harsh environments. PTFE coated encapsulated o-rings also have a good elastomeric memory.
- We can also supply rigid PTFE o-rings which have a high compression set.
FEP-encapsulated O-Rings (Fluorinated Ethylene Propylene):
* Outstanding chemical and corrosion resistance
* Low coefficient of friction
* Resilience with choice of elastomeric cores
* Low compression set
* No mould charge
* Solid silicone, Viton cores
PFA-encapsulated O-Rings (Perfluoroalkoxy). Same as FEP above but with these added benefits:
* Higher mechanical strength
* Better flex-life
* Low vapor permeation
* Excellent stress and crack resistance
* Longer wearability
* Solid silicone & Viton core
Welcome to send inquiry to amanda@tjswks.com
Amanda Zhu
Bldg 1, No.1, Haitaihuake Three Road, Tianjin(300384), China
E. amanda@tjswks.com | M.+86 15222707659(whatsapp,skype,wechat)
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