Asahi/America, Inc.
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Thermoplastic Valve Gaskets
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".
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- 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 - 195º F
- PTFE-bonded: - 40 - 250º F
- PVDF-bonded: - 40 - 250º 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
- 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")
- Chemical Processing
- Water & Wastewater
- Landfills
- Irrigation
- Food Processing
- Mining
