J-B Weld Ultimate Copper RTV Silicone Gasket Maker and Sealant 85g

Advanced high-temperature RTV sealant adhesive

The J-B Weld Ultimate Copper RTV Silicone Gasket Maker and Sealant is an RTV (Room Temperature Vulcanized) Silicone gasketing material that is 3 times more oil resistant than conventional silicones and designed to resist the high operating temperatures of turbocharged or high-performance engines. Ultimate Copper is effective in temperatures from -75F to 700F intermittently. 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.

J-B Weld Ultimate Copper RTV Silicone Gasket Maker and Sealant Features:

• 3 x more oil resistant
• Advanced high-temperature RTV sealant adhesive
• Designed for high operating temperatures

Applications:

• Oil pans
• Valve covers
• Exhaust manifolds
• Water pumps
• Timing covers
• Differential covers
• Drive housings
• Oven doors

Instructions:

• Prepare: For best results, clean and dry surface area
• Apply: Apply even, continuous 1/4 inch bead of Silicone to one surface area. Surround all bolt holes with Silicone
• Assemble: Reconnect parts while Silicone is wet
• Secure: Hand tighten until Silicone begins to squeeze out
• Dry: Allow drying for 1 hour and then tighten an additional 1/2 turn
• Finish: Scrape or cut away excess cured sealant. Silicone will fully cure in 24 hours