Aluminum RTV Silicone Gasket Maker 1283

Product Description

ALUMI-SEAL is a multipurpose silicone sealant. It is a non-slump, paste-like, one-component RTV (room temperature vulcanizing) gasket-maker. When applied as a formed-in-place gasket, it reacts with moisture in the air and cures to a rubber like product.

Product Features

  • Pressurized can means no caulking gun required
  • Cured material stays flexible as low as -76°F
  • Can be applied overhead or on sidewall joints without sagging or running off
  • Remains watertight and weatherproof through years of exposure
  • Temperature range of -76°F to 300°F and up to 400°F intermittently
  • Resistant to rain, sleet, snow, sunlight and temperature extremes
  • When fully cured and washed meets USDA standards


  • Clean Metal
  • Plastic
  • Glass
  • Rubber
  • Most Types of Wood
  • Ceramic Surfaces
  • Heating & Ventilating Duct Work
  • Equipment Housing
  • Plumbing Fixtures

Directions for Use

1. Surfaces must be clean, dry and free of oil, dirt and dust for best adhesion.
2. Apply a continuous bead of 1/16” to 1/8”.
3. Dries in 1 hour, fully cures in 24 hours and reaches optimum strength in 7 days.

Leave a small bead of material which will form a sealing “plug” for reuse. To use, gently pull “plug” and begin to use material. If plug breaks leaving the dispensing tip sealed, use a paper clip or other wire object to remove and loosen the remainder of the cured material.

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