What is epdm ptfe stress saver gaskets?

What is epdm ptfe stress saver gaskets?

EPDM/PTFE STRESS SAVER GASKETS T10(equivalent to Asahi gasket)----www.rubbersealing.com
T.C.I 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 F
PTFE-bonded: - 40 - 250 F
PVDF-bonded: - 40 - 250 F
Approximately one third bolt tightening torque ratings 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:
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

MaterialsSizes:EPDM: 1/2" - 12"PTFE-bonded EPDM: 1/2" - 12"PVDF-bonded EPDM: 1/2" - 10" (except 1 1/4" and 2 1/2")


Typical Applications
Chemical Processing
Water & Wastewater
Landfills
Irrigation
Food Processing
Mining