Permatex® Form-A-Gasket® No. 1 Sealant

Permatex® Form-A-Gasket® No. 1 Sealant

Fast-drying, hard-setting sealant designed for sealing rigid materials and flanges, or patching holes and joints where permanent assembly is desired. Temperature range -65°F to 400°F (-54°C to 204°C); resists common shop fluids and fuels.

Unit Per Case



• Extends gasket life

• Prevents leaks

• Fast drying

• Hard setting

• Withstands pressures up to 5000 psi


1. Remove all previous material from mating surfaces. Permatex Gasket Remover is recommended for most materials, not for plastics or painted surfaces.

2. For best results, clean and dry all surfaces with a residue-free solvent, such as Permatex Brake and Parts Cleaner.

3. Remove cap, puncture tube or cartridge seal and attach extension nozzle (if provided).

4. When used as a gasket dressing, spread product with a spatula to a uniform film on one side of gasket and then position it on the assembly. Coat the second side of gasket and re-assemble. 

5. Assembly is operational after 2 hours, full cure is effective after 24 hours


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