Thermoseal Klingersil C-4509 Compressed Non-Asbestos gasket sheet is manufactured with carbon fibers and special high-temperature resistance additives and reinforced with a nitrile

KLINGERSIL C-4509 is a special high-pressure gasket material that offers excellent service in many sectors of the chemical industry. Main fields of application: alkaline media and steam. The expanded metal reinforcement is a galvanized low carbon steel insert which increases the compressive strength and pressure capability. Suitable for high-pressure applications because of its higher resistance against blowouts.


KLINGERSIL C-4509 Gasket Sheets are available in these sizes:


1/64” X 60” X 60”


1/32” X 60” X 60”


1/16” X 60” X 60”


3/32” X 60” X 60”


1/8” X 60” X 60”





Note: Other thicknesses and sheet sizes may be available by special order.










Specifications (for 1/16” thick sheet):


Max Peak Temp with Liquids

850°F *

Max Peak Temp with Gases & Steam

590°F *

Max Operating Pressure with Liquids

2,200 PSI *

Max Operating Pressure with Gases & Steam

2,200 PSI *


*under suitable conditions



ASTM F104 Line Call out: 





See the data sheet PDF in this folder


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