ASAHI PTFE/ EPDM Low Torgue AV Gasket valve gaskets offer a unique double convex ring design that gives optimum sealing with only one third the torque commonly required with flat faced gaskets. Asahi offers EPDM gaskets from 1/ 2 " to 12 " ; PTFE-bonded EPDM gaskets in sizes from 1/ 2 " to 12 " ; and PVDF-bonded EPDM gaskets from 1/ 2 " to 10 " .
Features and Benefits
EPDM - durometer A, hardness 65 - 68
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
Working temperature:
EPDM: - 40 - 195 DEG C
PTFE-bonded: - 40 - 250 DEG C
PVDF-bonded: - 40 - 250 DEG C
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:
Semi-conductor industry, because of its purity
Aggressive chemicals ( strong acids, bases, halogens, etc.)
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 Materials .
Sizes:
EPDM: 1/ 2 " - 12 "
PTFE-bonded EPDM: 1/ 2 " - 12 "
PVDF-bonded EPDM: 1/ 2 " - 10 " ( except 1 1/ 4 " and 2 1/ 2 " )
