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Asahi/America 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". | 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: 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
| - 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")
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| Chemical Processing Water & Wastewater Landfills Irrigation Food Processing Mining
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