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J-B Gasket Maker & Sealant- Black


Mold & Mildew Resistant

Set Time

1 Hour

Cure Colour


J-B Weld Black Silicone Sealant & Adhesive is a general purpose RTV (Room Temperature Vulcanized) Silicone, designed for sealing and bonding uneven surfaces.

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

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


Great For:

  • Bonding & Sealing

  • Weather Stripping

  • Moldings

  • Interior Trim

  • Windows

  • Windshields

  • Door Frames

  • Lens Housing


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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