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Engineering Data— Soft Seat Material
Seat
Properties Nylon Teflon (unfilled) PEEK Detrin Polyphenylene
Temperature Range °F -30-250 -100-425 -60-500 -50-200 -50-450
Pressure Rating 900-1500 150-600 150-1500 150-1500 150-300
Mechanical Property Hardness D75 D58 D85 R-120 D80
Tensile Strength (psl) 8700(min) 2100-2400 11000(min) 6600-7500 (min) 2000-2350 (min)
Elongation (%) 250-290 250 30(min) 220 275-310
Physical Property Specific Gravity 1.04 2.2 1.3 1.41 1.9-2.1
Water Absorption (%) 0.2 <0.01 0.18 0.15 0.卜 0.2
Radiantion 5x106RAD 104RAD 109RAD 107RAD 9x106RAD
Service Application High pressure & Low temperature service Chemical& Cryogenic service High pressure &temperature service with steam in radiation environment High pressure& Low temperature ervice High temperature High Corrosion service
Sealing
Type Vlton® EPDM 25% Glass Filled PTFE NBR Buna.N
Temperature range °F -20~400 -60~300 -328~500 -50~300 -30~250
Service Application 1.85 — 2.24 1.2 1.31
Hardness D75 D90 D65 D50 D90
Gasket
Type Flexible Graphite Spiral Wound 304/316-f Graphite Spiral Wound 304/316+PTFE
Temperature range °F -328~500 -328~1000 -328~500
Service Application 100% Fire-safe 100% Fire-safe Cryogenic High Corrosion
Hardness 0-14 0-14 0-14
 
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