Teflon Encapsulated O-Rings

Call SVI today for Quality American-Made Teflon® Encapsulated O-Rings!

Encapsulated O-rings are o-rings consisting of a seamless and uniform Teflon® FEP/PFA encapsulation/jacket which completely encloses a core material of either silicone or Viton® elastomers. The combination of these components creates an o-ring that is virtually chemically inert and compression set resistant for use in harsh sealing environments.

FEATURES:

High Chemical Resistance: Chemical attack and swelling are the primary causes of O-Ring failure. Encapsulated o-rings from VPS are virtually chemically inert.
Outperforms Solid PTFE O-Rings: Our American-Made 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 from VPS economically and effectively replace Kalrez and other exotic O-Ring compounds. Our 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. (See General Specifications)
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 from .059" cross section x ½" I.D. to virtually unlimited larger sizes.
Low Compression Set: Consists of either a solid silicone or Viton® core encapsulated in Teflon®* FEP/PFA resin (with .010 to .045 wall depending cross section) which meets or exceeds requirements of L-P389A and ASTM-D-2166. (See technical bulletin).
 

GENERAL SPECIFICATIONS:

1. Encapsulation Material: DuPont Teflon® FEP: Tetraflouroethylene-Hexafluoropropylene. Dupont Teflon PFA: Tetraflouroethylene-Perfluoro (Propyl Vinyl Ether).

2. Core Material: Dow Corning Silicone, DuPont Viton® Type A, Viton® GFS elastomers.

3. Continuous Service Temperature:

A. Teflon FEP Encapsulation with Silicone Core: 400F/204C. to -75F/-60C
B. Teflon PFA Encapsulation with Silicone Core: 500F/260C to -75F/-60C
C. Teflon FEP Encapsulation with Viton® Core: 300F/149C to -10F/-23C
D. Teflon FEP Encapsulation with HT Viton®
E. Teflon PFA Encapsulation with HT Viton® Core: 400F/204C to -10F/-23C

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

5. Water Absorption: <0.01. Average Total Shore A

6. Hardness: 85-90 shore A for solid silicone core. 90-95 shore A for solid Viton® core. 75-80 shore A for hollow silicone core.

7. FDA Compliance: The clear TEFLON® FEP encapsulation of the o-ring complies with part 177 of Title 21 of the Food and Drug Administration's™ regulations for safe use as articles or components of articles for producing, manufacturing, processing, preparing, treating, packing, transporting or holding food in accordance with regulation 177.1550.

*Teflon® is Registered Trademark of DuPont.

 

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Whether you're an original equipment manufacturer or needing smaller quantities, call SVI today at
(800) 321-8173 to discuss your seal needs.

Important customer information: All names, numbers, symbols and descriptions are used for reference purposes only. It is not implied that any part listed is the product of these manufacturers; however, some parts may be the actual product of these manufacturers. Prices are subject to change without notice.

 

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