Fluid Sealing Products

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%
Seal-ability(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 – 455Temperature 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 – 457Temperature 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

Chesterton Steel Trap Metal/ Graphite Gasket is manufactured with concentric, isolated convolutions in sheet stainless steel that trap pure graphite against the flange face. As the flange is tightened, the convolutions are progressively flattened, thus trapping the graphite sealing media. Not only is a highly effective seal effected against both faces of the flange, but the graphite is protected against oxidizing atmospheres and corrosives. Steel Trap gaskets can remain in place and will continue to seal effectively until removal is necessary for equipment servicing or repair.These seals pay for themselves many times over in reduced maintenance and downtime. The unique, self-locating design allows the same size gasket to be used in the vast majority of flange pressure classes. This results in unmatched time savings in locating the right gasket, while reducing inventory and virtually eliminating the chance of incorrect gasket selection.

 

Technical data

Temperature Limit: –328°F (–200°C) to 932°F (500°C)
atmosphere –328°F (–200°C) to 1200°F (650°C)
steam –328°F (–200°C) to 1650°F (900°C)
inert media Pressure Limit: vacuum to 6000 psi (415 bar)
Chemical Resistance: pH 0 – 14
• Withstands temperature extremes
• Superior pressure handling
• Impervious to most chemicals
• No flange galling
• Works with all existing flanges
• Superior fugitive emissions control capability
• Specialty materials available
• Long term reliability without flange welding

Spool Gaskets