Homepage | Favorites  
O-rings & Seals
Rubber Washers
Rubber Grommets
Rubber Bushings
Rubber Bellows
Rubber Plugs
Rubber Bumpers
Rubber Gaskets
Rubber Mounts
Suction Cups
Silicone Bracelets
Tubing & Hoses
Rubber Extrusions
Rubber Valve Seats
Custom Rubber Parts
    Current Position: Home > Products > O-rings & Seals

 
Description
Encapsulated O-ring contains a silicone or Viton O-ring inside and the thin FEP or PFA covered outside, so Encapsulated O-ring has the elasticity and tightness of the rubber and the chemical resistance of the PTFE. 
And Encapsulated O-ring also has the excellent sealing property. Rubber O-rings are easy to abrasion, and not good resistance to chemical and gas permeation. PTFE O-rings are hard that can resist to compression but less elastic.

FEP/PFA Encapsulated O-rings have good resistance to swelling and chemical stability (unless attack by alkali metals, fluorine and some halides at high temperatures) with good resilience. FEP/ PFA Encapsulated O-rings have a very low coefficient of friction (only 0.1 to 0.2) and excellent resistance to gas permeation. These properties allow Encapsulated O-rings to be used in harsh environments.
  next