3M Marine Grade Silicone Sealant - Clear, 3 oz., Seals and Waterproofs
3M Marine Grade Silicone Sealant - Clear, 3 oz., Seals and Waterproofs
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3M Marine Grade Silicone Sealant - Clear, 3 oz., Seals and Waterproofs

4.2 stars out of 21 reviews
(4.2)|
21 ratings

Key item features

  • High-Quality Sealant: High quality silicone sealant designed for marine environments
  • Versatile Use: Suitable for above the waterline interior/exterior sealing
  • Mildew Resistant: Formulated to resist mildew, non-yellowing, and non-sagging
  • Strong Adhesion: Adheres to bare and painted metal, fiberglass, glass, non-oily woods, many plastics, and abraded rubber
  • Moisture-Curing: Cures with moisture for a durable and long-lasting seal
  • Weather-Resistant: Engineered to withstand harsh marine environments and high temperatures
  • Flexible Application: Remains flexible even after years of exposure, non-shrinking and non-sagging
  • Recommended Uses: Ideal for electrical hatch sealing, dashboard components, port lights, and other above waterline applications
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Current price is Now $15.28
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was $17.98
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4.2 out of 5 stars
stars21 ratings16 reviews
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Showing 1-3 of 16 reviews

Oct 4, 2025
Chloe
Item details
Color: Clear
Size: 0.25
5 out of 5 stars review

Verified Purchase

Great stuff

Put it on before we got to the lake and it was dried by the time we got to the lake. No leaks and it did the job!

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Dec 29, 2025
Andre
Item details
Color: Clear
Size: 0.25
5 out of 5 stars review

Verified Purchase

Great adhesion and long lasting bond!

Incentivized Review
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Nov 9, 2024
Jackie
Top Reviewer
Item details
Color: Clear
Size: 0.25
5 out of 5 stars review

Verified Purchase

Super Durable!

I have use this product for about 18 years. It is one of the few products that I can say has maintained its quality. Because it's a marine product it is the most repellent of water and it last a long time.

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