Frenzelit Compressed Gasket Sheet
Style 7085 - NOVATEC 925F Engineered Graphite
NOVATEC 925F's high percentage of graphite and low percentage of rubber binder gives it such remarkable media and temperature resistance. NOVATEC 925F is Frenzelit's universal high pressure compressed sheet gasket material and it contains 75% pure graphite. This is an excellent chemical sheet that works best in flanges, pump casings, heat exchangers, lids, vessels, valve bodies and sight glasses. It can replace flexible graphite in many applications.
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Works best in high pressure flanges, pump casings, heat exchangers, lids, vessels, valve bodies and sight glasses
ASTM F104 (Tests 1/32" Thick)
F 38B Creep Relaxation:
22 hours @ 212°F (100°C): 12%
22 hours @ 392°F (200°C): 30%
F 37A Sealability:
Fuel A @ 14.5 PSI/Gasket Load 1000 PSI: .20 ml/hr
F 37B Sealability
Fuel A @ 9.8 PSI/Gasket Load 500 PSI: .06 ml/hr
Nitrogen @ 30 PSI/Gasket Load 3000 PSI: .075 ml/min
F 146 Thickness Increase:
Oil #3, 5 Hrs @ 300°F: < 2%
Fuel B, 5 Hrs @ 73°F: < 1%
F 36 A Compressibility:
5000 PSI Gasket Load, 15% F 36A Recovery: 40%
DIN 3535 Part 6 Gas Permeability:
Nitrogen @ 580 PSI/Gasket Load 4640 PSI: .02 cc/min
DIN 52913 Stress Relaxation @ 7250 PSI:
16 Hrs @ 347°F: Stress Retained > 6500 PSI
16 Hrs @ 572°F: Stress Retained > 5000 PSI
DIN 3754 48 Hrs @ 75oF Thickness Increases H2S04
Sulfuric Acid 65% Concentration: 6%
Na0H Sodium Hydroxide 25% Concentration: .5%