FEP Encapsulated Silicone O-Rings,PFA Encapsulated Silicone O-Rings
Silicone O-Rings encapsulated with FEP or PFA are designed to address the growing problem of sealing in the most hostile chemical and temperature environments. It 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.
Encapsulated O-Rings are available in over 60 standard cross-section sizes from .063″ (1.60mm) to 1-1/4″ (31.75mm). StandardEncapsulated O-Ringsare comprised of FEP over silicone 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).
PFA has higher mechanical strength than FEP at elevated temperatures and has excellent crack and stress resistance.
FEP (Fluorinated Ethylene Propylene)
Upper temperature limit: 400°F (204°C)
Excellent chemical and corrosion resistance
Will not absorb moisture
Clear with light blue tint
Upper temperature limit: 500°F (260°C)
Excellent heat and chemical resistance
Better crack and stress resistance than FEP
Extremely smooth surface
Low vapor permeation
General temperature range: -67° to +500°F (-55° to +260°C)
Low compression set
Good heat resistance
Good low temperature resistance
Moderate solvent resistance
Ozone aging & weather resistance
Related words:O RING GASKET,SILICON FEP CASED,FKM FEP CASED,SILICON ENCAPSULATED,ENCAPSULATED O RINGS