3M 7000120476 Marine Grade Silicone Sealant White 10oz Cartridge

The 3M Marine Grade Silicone Sealant is a premium, permanently flexible sealant specifically formulated for marine applications where moisture resistance and durability are critical. This professional-grade sealant creates waterproof, weather-resistant seals that withstand the harsh marine environment including saltwater exposure, UV rays, and extreme temperature fluctuations.

Key Features:

• 100% silicone formula provides superior adhesion to fiberglass, glass, metal, and painted surfaces
• Permanently flexible—won't crack, shrink, or become brittle over time
• Excellent resistance to salt water, UV radiation, and temperature extremes from -60°F to 400°F
• Forms a waterproof, weather-resistant seal ideal for above and below waterline applications
• Mildew resistant formulation for long-lasting performance in humid marine conditions
• Low odor, non-corrosive formula safe for use on sensitive marine materials
• 10 oz (1/10 gallon) cartridge size fits standard caulking guns

Ideal for sealing portholes, hatches, deck hardware, windshields, and through-hull fittings. This white sealant provides a clean, professional appearance while delivering the reliability 3M is known for in marine applications. OEM part number 51135-08027.