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Non - Asbestos Gland Packages

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Fluid Sealing Products
Non - Asbestos Gland Packages
( 450 / 455 / 457 )

Chesterton 450 Synthetic Fiber Sheet is a low temperature, non-asbestos sheet gasketing material suitable for general services to 390°F (200°C). 365 psi (25 bar). 450 Synthetic Fiber Sheet is recommended for use in water, gas, brine and steam applications. 450 is not recommended for use in chlorinated hydrocarbons, aromatic and ester ketones.

TECHNICAL DATA – 450
Temperature Limit 390°F (200°C)
Pressure Limit 365 psi (25 bar)
Compressibility (ASTM-F36) 15%
Sealability  (ASTM-F37) 0,25 ml/hr
Creep relaxation (ASTM-F38) 20%
Recovery (ASTM-F36) 50%
Tensile strength across grain  (ASTM-F152) 1600 psi (110 bar)
P x T = 125,000 (°F x psi)
P x T = 4,375 (°C x bar)
Color Grey

Chesterton 455 Aramid Fiber/Nitrile Binder Sheet is a general purpose sheet gasket material offering good sealability and chemical resistance. 455 incorporates synthetic fiber with a nitrile binder, and can be used against water, salt solutions, organic alkali aliphatic and aromatic hydrocarbons, alcohols, ester, oils and gases up to 575°F (300°C). 455 is not recommended for use in chlorinated hydrocarbons, aromatic and ester ketones.

TECHNICAL DATA – 455
Temperature Limit 575°F (300°C)
Pressure Limit 735 psi (50 bar)
Compressibility (ASTM-F36) 15%
Sealability  (ASTM-F37) 0,25 ml/hr
Creep relaxation (ASTM-F38) 25%
Recovery (ASTM-F36) 50%
Tensile strength across grain (ASTM-F152) 1500 psi (100 bar)
P x T = 350,000 (°F x psi)
P x T = 12,810 (°C x bar)
Color Light Red

Chesterton 457 Carbon Fiber / Nitrile Binder Sheet is a high temperature, non-asbestos sheet gasket material formulated for a wide variety of gasketing needs. 457 is recommended for use in a broad range of steam,water, oil and hydrocarbon applications. 457 is not recommended for use in chlorinated hydrocarbons, aromatic and ester ketones.

TECHNICAL DATA – 457
Temperature Limit 840°F (450°C)
Pressure Limit 1470 psi (100 bar)
Compressibility (ASTM-F36) 15%
Sealability (ASTM-F37) 0,20 ml/hr
Creep relaxation (ASTM-F38) 20%
Recovery (ASTM-F36) 40%
Tensile strength across grain  (ASTM-F152) 1500 psi (100 bar)
P x T = 600,000 (°F x psi)
P x T = 21,800 (°C x bar)
Color Black