Thermoseal Klingersil C-4408 Compressed Non-Asbestos gasket sheet is manufactured with aramid fiber reinforced with a nitrile binder . (Black Sheet)

Thermoseal Klingersil C-4408 is a universal high-pressure gasket material for industrial applications. This material has a low carbon steel woven mesh insert that improves sress relaxation and makes this material suitable for fluctuating temperatures and pressures.


  • Oil resistant
  • Fuel resistant
  • Hydrocarbon resistant



KLINGERSIL C-4408 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

750°F *

Max Peak Temp with Gases & Steam

450°F *

Max Operating Pressure with Liquids

1,400 PSI *

Max Operating Pressure with Gases & Steam

1,400 PSI *


*under suitable conditions



ASTM F104 Line Call out: 





See the data sheet PDF in this folder


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