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3M Marine Grade Silicone Sealant is a premium, one-component silicone formula designed specifically for above-waterline sealing on boats, RVs, and watercraft. It offers superior flexibility, weather resistance, and mildew protection while bonding to multiple surfaces without yellowing or sagging. Quick curing times mean less downtime and more time on the water.







| ASIN | B000N9RVAA |
| Best Sellers Rank | #49,563 in Automotive ( See Top 100 in Automotive ) #179 in RV Sealants |
| Brand | 3M |
| Brand Name | 3M |
| Color | White |
| Compatible Material | Fiberglass, Glass, Metal, Plastic |
| Customer Reviews | 4.6 out of 5 stars 210 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 Highlight | For Boats and RVs, Above the Waterline Interior/Exterior Sealing, 08027 |
| 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
3 days ago
2 months ago