Chesterton 198 Corrision-Resistant Graphite Gasket

Chesterton 198 Corrision-Resistant Graphite Gasket
For Extreme High-Temperature Applications


​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​​Chesterton 198 is a high-purity graphite sheet gasket with no fillers or binders. 198 contains a corrosion inhibitor that makes it an excellent gasket for almost all environments. It is ideal for use in extreme temperature applications where metal reinforcement cannot be used.

High-temperature tolerance​​
Chemically ​resistant​​
Available in thicknesses 0,8mm, 1,6mm, 3,2mm (1/32", 1/16", 1/8") ​​
Sheet sizes 1m x 1m (39.4" x 39.4"), and 1,52m x 1,52m (60" x 60")​​
Flanged joints
High temperature
Steam, corrosives, hydrocarbons
Temperature Limit–240° C (–400° F) to 2760° C
(5000° F) in non-oxidizing services
455° C (850° F) in oxidizing services
Pressure Limit140 bar g (2000 psig), Compressibility (ASTM-F36)40% Creep Relaxation (ASTM-F38)<5% Recovery (ASTM-F36)12 to 17%
P x T = 58,000 (°C x bar g)
​​P x T = 1,600,000 (°F x psig)



SDS: 198 (English) 198 (English)pdf
SDS: 198 (Deutsch) 198 (Deutsch)pdf



Catalog: Mechanical Packing and Gaskets (Espanol) Mechanical Packing and Gaskets (Espanol)pdf
Catalog: Chesterton Valve Packing (Nihongo) Chesterton Valve Packing (Nihongo)pdf