3M™ Marine Mildew Resistant Silicone White 3 oz.
SKU: 123601
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3M™ Marine Mildew Resistant Silicone is excellent as a galley and head sealant, gasket adhesive or bedding compound for portholes, hatches, windows and marine hardware. It also works in homes or RVs around doors, windows, bathtubs and showers. 3M Marine Sealant Silicone seals and waterproofs while remaining flexible. This product seals fiberglass, gel coat, glass, metal, rubber, wood and vinyl. May be used on plexiglass and lexan surfaces. Not intended for continuous use below the waterline.

To Use: Clean and dry all bonding surfaces. Apply 3M Marine Sealant Silicone and remove any excess immediately. The surface will skin in 5-10 minutes and will fully cure in 24 hours. This sealant does not prevent mildew on other surfaces and is not paintable.


  • Mildew resistant.
  • Excellent gasket adhesive
  • High-quality silicone formulation


Sale Unit: EA
Brand: 3M
Size: 3 oz
Bond: Removable Bond When Used on Wood and Fiberglass
Curing Time: 24 hours


Bedding (Installing) Snaps & Fasteners

How to bed snaps and other fasteners on the deck of a boat. Prevent water leakage by bedding your fasteners correctly.

Bedding Deck Hardware & Fittings

Bedding Deck Hardware and Fittings to your boat is easy. A leak around deck hardware is not only annoying, it is probably damaging your boat. Using today's sealants, making deck hardware watertight is not all that difficult, and if you bed your boat's hardware properly, you will only need to do it once.


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