PTFE BONDED EPDM GASKETS DN20

Standard Features
•PTFE or PVDF-bonded EPDM for maximum corrosion resistance
•Perfect sealing at low bolt tightening torque ratings, longer gasket life
•Ideal for plastic piping systems, as well as metal or plastic-lined metal systems
• Sulfur cured
•Durometer:
1)  EPDM:   65 - 70
2)  PTFE-bonded:  95 - 100
3)  PVDF-bonded: 83 - 85
•Working temperature:
1)  EPDM:   - 40º - 195º F
2)  PTFE-bonded:  - 40º - 250º F
3)  PVDF-bonded: - 40º - 250º F
• Approximately a one-third bolt tightening torque rating as compared with flat or envelope type gasket.
•Thickness of bonded materials
PTFE: All Sizes: 0.016" (0.4mm)
PVDF: Sizes 1/2" - 2": 0.016" (0.4mm)
PVDF: Sizes 3" - 10 ": 0.020" (0.5mm)
•PTFE-bonded gasket excellent for most corrosive chemicals
• PVDF-bonded  gasket  is  ideal  for  the  following: 
1]  Semiconductor  industry,  because of  its  purity 
2]  Aggressive chemicals (strong acids, bases, halogens, etc.) 
3]  Media  that  generates any  volatile  gas  (PVDF gas permeation is only 1/50 of PTFE)
• Both the PTFE and PVDF-bonded gaskets employ a proprietary laminating process for bonding to EPDM, providing the greater elasticity required for lower sealing torques