Thermoseal Klingersil C-4439 Compressed Non-Asbestos gasket sheet is manufactured with a combination of fiberglass and aramid and inorganic fibers reinforced with a nitrile binder

Description: KLINGERSIL C-4439 is an excellent high-performance material for use in high temperature and high-stress applications. The expanded metal reinforcement is a galvanized low carbon steel insert which makes this material suitable when vibrations are present.



KLINGERSIL C-4439 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

780°F *

Max Peak Temp with Gases & Steam

540°F *

Max Operating Pressure with Liquids

2,400 PSI *

Max Operating Pressure with Gases & Steam

1,900 PSI *





*under suitable conditions



ASTM F104 Line Call out: 





See the data sheet PDF in this folder


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