Life-Calk® Sealant
Mouse Over to Zoom
Click to Enlarge

BOATLIFELife-Calk® Sealant


In stock online.
Model # 139535 | Mfg # 1031UPC # 20537010310
Life-Calk Sealant, Black


4.3 Stars


Product Overview

Versatile one-part adhesive/sealant for hardware sealing and bedding above and below the waterline.

One-part, thiokol-based polysulfide sealant cures to a positive waterproof seal. Resists oil, brine, gas, water and most chemicals. Bonds to wood, fiberglass, metal and glass. No priming required except on oily woods such as teak.

Key features 

  • Permanently flexible marine sealant
  • Can be sanded and painted
  • Resistance to teak oils, gasoline, and diesel fuel
  • Will bond to fiberglass, wood, metal, glass, and itself
  • Cures to a firm flexible rubber seal
  • Can be applied underwater


  • Formulation: One-part polysulfide 
  • Recommended Usage: Fiberglass, wood, metal, glass, above and below water 
  • Material Incompatibilities: Not recommended for use with ABS or Lexan plastics 
  • Adhesion Rating: Tensile: 170 psi; 
  • Ultimate elongation: 500% 
  • Cure Time: Tack-free: 24hrs.; Complete cure: 10-20 days 
  • Cleanup: Life-Calk Solvent, Model 139592 
  • Removal: Mechanical removal
 WARNING: This product can expose you to Toluene which is known to the state of California to cause Reproductive Harm. For more information, go to


The West Advisor articles have answered boaters' questions and provided solutions to boating problems for more than 20 years. West Marine has compiled one of the Web's most comprehensive collections of technical boating information articles.

Related West Advisor Articles


Product Q & A