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FEP FPA PTFE Teflon Encapsulated Silicone Viton O Rings with Excellent Performance
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Product: Views:277FEP FPA PTFE Teflon Encapsulated Silicone Viton O Rings with Excellent Performance 
Unit price: Negotiable
Delivery date: Since the payment date Days delivery
Valid until: Long-term effective
Last updated: 2017-10-30 11:18

Encapsulated O-Ring with PTFE FEP or FPA

Encapsulated o-rings are o-rings consisting of a seamless and uniform PTFE FEP/FPA encapsulation which completely encloses a rubber core material. Elastomer/rubber core materials are a choice of Silicone or Viton.



High Chemical Resistance: Chemical attack and swelling are the  primary causes of O-Ring failure. Encapsulated o-rings are virtually  chemically inert.

Outperforms solid PTFE O-Rings: encapsulated o-rings match the  chemical and temperature resistance of solid PTFE O-Rings, encapsulated o-rings possess properties of elasticity and recovery which are crucial  in many sealing applications. 

Economical: encapsulated o-rings economically and effectively  replace Kalrez and other exotic O-Ring compounds. Encapsulated o-rings  will decrease downtime and hence increase profitability wherever  corrosive fluids and gases cause premature seal failure. 

Wide Temperature Range: Encapsulated o-rings withstand breakdown  caused by industrial solvents and corrosive materials at elevated  temperatures from -60° C/-75° F to +205° C/400° F.

Non Stick Surface:  Provides easy cleanup of viscous materials. 

Low Coefficient of Friction: .2 on metal. Self lubricating surface.

Sanitary: Eliminates contamination of fluids by elastomers.  Sterilizable and autoclavable. FDA compliant, USP Class VI compliant, NSF compliance available for specific applications.

Unlimited Sizes: Available in standard and metric sizes to virtually unlimited larger sizes. 

Low Compression Set: Encapsulated o-rings consist of either a  solid silicone or viton core encapsulated in PTFE FEP/PFA  resin (with .010 to .045 wall depending cross section) which meets or  exceeds requirements of L-P389A and ASTM-D-2166.



1.Encapsulation material:

TPTFE FEP: Tetraflouroethylene-Hexafluoropropylene.

PTFE PFA: Tetraflouroethylene-Perfluoro (Propyl Vinyl Ether).

2.Core material: Silicone or Viton  elastomers.

3.Continuous service temperature:

A.FEP Encapsulation with Silicone Core: 400F/204C. to -75F/-60C

B.PFA Encapsulation with Silicone Core: 500F/260C to -75F/-60C

C.FEP Encapsulation with Viton Core: 300F/149C to -10F/-23C

4.Coefficient of friction: .1 to .2 on metal surfaces.

5.Water absorption: <0.01.

6.Average total shore A hardness:

85-90 shore A for solid silicone core.

90-95 shore A for solid viton core.

SVKS Seal, with over 10 years experience, is one of the leading fep fpa ptfe teflon encapsulated silicone viton o rings with excellent performance manufacturers and suppliers in China. And we also offer the customized service catering to your special requirement. Please be free to buy the rubber products with competitive price from us.