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Teflon™Encapsulated O-Ring
Technical Information
Composition and Structure
Teflon™ FEP Encapsulated o-rings consist of a seamless
and uniform Teflon™ FEP encapsulation which completely
encloses a core material of either silicone or Viton™
elastomer.
Teflon™ FEP Encapsulation
between 0.010” to 0.045”
depending on o-ring cross
section (not a coating)
Silicone or Viton™
Core Material
Function and Performance
The seamless, uniform, and integral Teflon™ FEP
encapsulation is responsible for the sealing effect, and the
elastomer core provides continuous reset and constant
pressure of the encapsulation onto the sealing point. The
result is an overall compression, increasing with medium
pressure.
As a result, the Teflon™ FEP Encapsulated O-Rings can
outperform solid PTFE O-Rings. The encapsulated o-rings
match the chemical and temperature resistance of solid
PTFE O-Rings and possess the elasticity and recovery
properties which are crucial in many sealing applications.
Chemical attack and swelling are the primary causes of
failure in o-rings. The Teflon™ FEP encapsulation is virtually
chemically inert and not subject to most chemical attack.
Temperature operating range-60°C/-75°F to +205°C/400°F.
Properties/Specifications
(1) Encapsulation material:Teflon™ FEP resin
(yielding high chemical resistance).
(2) Core material: Silicone or Viton™ elastomers.
(3) Operational temperature range:
-60°C/-75°F to +205°C/400°F.
(4) Coefficient of friction: .1 to .2
(5) Elongation at break: 100%-156%
(6) Water absorption:<0.01
(7) Average total shore A hardness:
85-90 shore A-silicone core
90-95 shore A-Viton™core
(8) FDA Compliance:The clear Teflon™ FEP
encapsulation 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,
packaging, transporting, or holding food in
accordance with regulation 177.1550.
Industrial Applications
• Aircraft and Aerospace
• Chemical Processing Industries
• Pharmaceutical Production
• Polymer Production
• Paint and Coating Operations
• Food Industries
• Petrochemical Industries
• Chemical Transport
• Semi-Conductor Manufacturing
• Pulp and Paper Industries
• Photochemical Industries
Specific Applications
• Air Operated Pumps
• Mechanical Pumps
• Autoclaves
• Heat Exchangers
• Pipelines
• Pressure Vessels
• Valves
• Filtration Systems
• Gas Compressors