TFE-O-SIL silicone, Viton™ or EPDM O-Rings encapsulated with FEP or PFA are designed to address the growing problem of sealing in the most hostile chemical and temperature environments. TFE-O-SIL combines the best qualities of two materials, FEP or PFA on the outside with its chemical inertness and an elastomer on the inside for resilience. This unique combination forms a highly effective, long lasting seal for the most demanding applications.
TFE-O-SIL O-Rings are available in over 60 standard cross-section sizes from .063" (1.60mm) to 1-1/4" (31.75mm). Standard TFE-O-SIL O-Rings are comprised of FEP over silicone, Viton™, or EPDM, and can be used in temperatures from -75° to +400°F (-60° to +205°C) depending upon the choice of elastomer core.
For high temperature applications to 500°F (260°C), TFE-O-SIL is made with PFA over silicone. PFA has higher mechanical strength than FEP or TFE at elevated temperatures and has excellent crack and stress resistance.
Encapsulated O-Rings are primarily used as a static seal (axial or radial).
Design Tip! Square cross-section TFE-O-SIL Rings can be used in applications where a larger sealing surface is needed to effect a more positive seal. These Rings require less squeeze than standard O-Rings for sealing and utilize the same groove dimensions.
Standard TFE-O-SIL O-Rings in round or square cross-sections are manufactured in sizes to AS 568A industry standards. Non-standard sizes are also available for custom designs, along with a full range of metric (ISO) sizes.
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
Temperature range: -75°F to 400°F (-60°C to 205°C)
Unlimited sizes (No tooling charges)
Solid & hollow silicone, Viton™ cores
FDA compliant materials available
USP Class VI approved materials available
PFA-encapsulated O-Rings (Perfluoroalkoxy). Same as FEP above but with these added benefits:
High temperature applications to 500°F (260°C)
Higher mechanical strength
Better flex-life
Low vapor permeation
Excellent stress and crack resistance
Longer wearability
Solid silicone & Viton™ core
Square Cross-Section Ring Seals. Same as FEP above plus:
Retrofits into standard O-Ring groove
Larger sealing surface
Less squeeze required for sealing
Effects more positive seal
Rectangular cross-sections also available
Solid silicone & Viton™ core
TFE-O-SIL silicone, Viton™ or EPDM O-Rings encapsulated with FEP or PFA are designed to address the growing problem of sealing in the most hostile chemical and temperature environments. TFE-O-SIL combines the best qualities of two materials, FEP or PFA on the outside with its chemical inertness and an elastomer on the inside for resilience. This unique combination forms a highly effective, long lasting seal for the most demanding applications.
TFE-O-SIL O-Rings are available in over 60 standard cross-section sizes from .063" (1.60mm) to 1-1/4" (31.75mm). Standard TFE-O-SIL O-Rings are comprised of FEP over silicone, Viton™, or EPDM, and can be used in temperatures from -75° to +400°F (-60° to +205°C) depending upon the choice of elastomer core.
For high temperature applications to 500°F (260°C), TFE-O-SIL is made with PFA over silicone. PFA has higher mechanical strength than FEP or TFE at elevated temperatures and has excellent crack and stress resistance.
Encapsulated O-Rings are primarily used as a static seal (axial or radial).
Design Tip! Square cross-section TFE-O-SIL Rings can be used in applications where a larger sealing surface is needed to effect a more positive seal. These Rings require less squeeze than standard O-Rings for sealing and utilize the same groove dimensions.
Standard TFE-O-SIL O-Rings in round or square cross-sections are manufactured in sizes to AS 568A industry standards. Non-standard sizes are also available for custom designs, along with a full range of metric (ISO) sizes.
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
- Temperature range: -75°F to 400°F (-60°C to 205°C)
- Unlimited sizes (No tooling charges)
- Solid & hollow silicone, Viton™ cores
- FDA compliant materials available
- USP Class VI approved materials available
PFA-encapsulated O-Rings (Perfluoroalkoxy). Same as FEP above but with these added benefits:
- High temperature applications to 500°F (260°C)
- Higher mechanical strength
- Better flex-life
- Low vapor permeation
- Excellent stress and crack resistance
- Longer wearability
- Solid silicone & Viton™ core
Square Cross-Section Ring Seals. Same as FEP above plus:
- Retrofits into standard O-Ring groove
- Larger sealing surface
- Less squeeze required for sealing
- Effects more positive seal
- Rectangular cross-sections also available
- Solid silicone & Viton™ core
