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J-B Gasket Maker & Sealant- Red


Temperature resistant up to 650° F

Set Time

1 Hour

Cure Colour


J-B Weld Hi-Temp Red Silicone Gasket Maker & Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material, designed for use in mechanical assemblies where the existence of higher, continuous temperatures up to 550º F or 650º F intermittent might exist.

Upon curing, which occurs when the product is exposed to the moisture in air, the silicone forms a tough, waterproof seal on most surfaces.

It will not shrink or crack, resists weathering, is sensor safe and is great for many automotive applications.


Great For:

  • Oil Pans

  • Valve Covers

  • Exhaust Manifolds

  • Water Pumps

  • Timing Covers

  • Differential Covers

  • Drive Housing

  • Oven Doors

31314 Hi-Temp Red Gasket Maker & Sealant

Made in the USA US flag



Clean repair area of dirt, grease, oil, paint, rust etc. For best results use a detergent or degreaser to first clean the surface, then roughen surface with file or coarse snadpaper to provide best repair.


Apply even, continuous ¼ inch bead of silicone to one surface area. Surround all bolt holes with silicone as well.


Reconnect parts while silicone is still wet.


Hand tighten until Silicone begins to squeeze out (if required).


Allow drying for 1 hour and then tighten an additional ½ turn (if required).


Scrape or cut away excess cured sealant. Silicone will fully cure in 24 hours.

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