Kingseal Silicone, Viton™ or EPDM O-Rings encapsulated with FEP of PFA is designed to address the growing problem of sealing in the most hostile chemical and temperature environments. The TFE encapsulated O-ring combines the best qualities of two materials, FEP and 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.

 

Kingseal TFE Encapsulated O-rings are available in over 60 standard cross-section

sizes from .63" (1.60mm) to 1-1/4 (31.75mm). Standard TFE encapsulated O-rings

are comprised of FEP over silicone, Viton™, or EPDM and can be used in temperatures

from -75°F to +400°F (-60° to +205°C) depending upon the choice of elastomer.

For high temperature applications to 500°F (260°C), our TFE encapsulated O-ring

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.

 

 

Teflon encapsulated O-Rings are primarily used as a static seal (axial or radial).

Standard TFE Encapsulated O-Rings in round or square cross-section 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 (Flourinated 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 and hollow silicone, Viton™ cores

• FDA compliant materials available

• USP Class VI approved materials available

 

PFA-encapsulated O-Rings ( Perflouroalkoxy).

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

 

Typical Applications

 

TFE Encapsulated Gaskets provide a superior seal for any bulk

liquid transfer in manufacturing, distribution of storage.

 

Chemical Processing:

 

From trucks to storage
From storage to process areas

 

Petroleum Industry:

Deliveries to service stations

Oil canning

Blending grease and oil

Mixing oil additives

 

Rubber and Plastics:

Blending liquids and resins

 

Printing and Marking Equipment:

Hose connector

 

Viton™ is a registered trademark of Dupont Performance Elastomers

Teflon™ is a registered trademark of Dupont.