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

#9093742
Warranty Badge - 12-Months
Ships Dec 6 - Dec 16
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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

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