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⚓ Seal like a pro, sail like a boss!
3M Marine Grade Silicone Sealant is a premium, one-component silicone designed specifically for above-waterline sealing on boats and RVs. It offers superior flexibility, weather and mildew resistance, and a non-yellowing white finish. Easy to apply with no mixing required, it bonds to multiple surfaces and cures quickly, ensuring durable, professional-grade protection that keeps your watercraft looking pristine and ready for action.







| ASIN | B000N9RVAA |
| Best Sellers Rank | #51,289 in Automotive ( See Top 100 in Automotive ) #156 in RV Sealants |
| Brand | 3M |
| Brand Name | 3M |
| Color | White |
| Compatible Material | Fiberglass, Glass, Metal, Plastic |
| Customer Reviews | 4.6 out of 5 stars 209 Reviews |
| Global Trade Identification Number | 00051135080276 |
| Included Components | 3M 08027 Marine Grade Silicon Sealant - 1/10 Gallon Cartridge, White |
| Item Dimensions | 8.5 x 6.5 x 12.25 inches |
| Item Form | Liquid |
| Item Type Name | 3M Marine Grade Silicone Sealant, 08027, For Boats and RVs, Above the Waterline Interior/Exterior Sealing, White, 10.3 fl oz Cartridge |
| Item Weight | 12.6 ounces |
| Item dimensions L x W x H | 8.5 x 6.5 x 12.25 inches |
| Manufacturer | 3M |
| Material | Silicone |
| Material Type | Silicone |
| Model | MG Sil |
| Number of Items | 1 |
| Number of Packs | 1 |
| Part Number | 051135080276 |
| Style | 10.3 fl oz (Cartridge) |
| Style Name | 10.3 fl oz (Cartridge) |
| Surface Recommendation | Wall |
| UPC | 051135080276 |
| Unit Count | 1 Count |
| Water Resistance Level | Waterproof |
E**D
Works great
My boat
M**T
Simply the best...
I tried a couple other brands and this one is by far the easiest, least messy, and perfect application for me. Pool deck grout line.
J**R
As expected, 3M is the best
You can never ho wrong with a 3M product
R**U
Good Product
Perfect
J**O
Good for finishing
I bought this silicone because the joint of my balconi with the wall had transparent silicone before, but was aging and becoming yellow. I replace most of the old one and with this silicone and passing a finger to make the format a got a very good format which you don't see the end of the balconi and the start of the wall. I attached a picture showing it.
S**R
Works good for the right application
Works very good, Remember that this is the low strength version.
D**.
Easy to work with
I used it to bed the opening port lights on my Catalina 25. No leaks so far. The product has a creamy consistency that makes it easy to work and clean up.
L**.
Easiest Silicone I ever used!
Silky with easy application and clean up was a breeze.
Trustpilot
2 weeks ago
2 months ago