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.

Features:

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

The marine industry no longer considers silicone to be the best all-around option. Today it use is more specialized than universal. It is excellent at:

• Excellent water resistance (fresh & salt)
• High UV and temperature resistance
• Flexible over time
• Good adhesion to glass, ceramics, and some plastics

It is still a great choice for:

• Glass-to-frame seals
• Non-structural, above waterline sealing
• Electronic housings or light fixtures

Alternatives:

• Polyurethane sealants & hybrids (structural adhesion)
• Polysulfide sealants (fuel-resistant)
• Butyl-rubber based sealant (non-structural like silicone, less mess)