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⚓ Seal your adventure with confidence—marine-grade strength that won’t let you down!
3M Marine Grade Silicone Sealant is a premium, one-component silicone designed specifically for above-waterline sealing on boats and RVs. It offers fast curing in 24-48 hours, superior adhesion to multiple surfaces, and long-lasting flexibility that resists weather, mildew, and yellowing. Ideal for professionals and enthusiasts who demand a durable, clean, and reliable seal to protect and maintain their watercraft’s pristine look.
| ASIN | B000N9RVAA |
| Best Sellers Rank | #73,517 in Automotive ( See Top 100 in Automotive ) #172 in RV Sealants |
| Brand Name | 3M |
| Color | White |
| Compatible Material | Fiberglass, Glass, Metal, Plastic |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,876) |
| 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 |
| Manufacturer | 3M |
| Material Type | Silicone |
| Model | MG Sil |
| Number of Items | 1 |
| Part Number | 051135080276 |
| Style Name | 10.3 fl oz (Cartridge) |
| Surface Recommendation | Wall |
| UPC | 051135080276 |
| Unit Count | 1.0 Count |
| Water Resistance Level | Waterproof |
A**S
Great product! Works great! Highly recommend!
Great product! Works great! Highly recommend!
J**F
Good marine grade silicone
Needed some marine grade silicone for some fittings on my camper and this worked perfectly. Put the cap on after you're done and the product doesn't cure in the tube and become a solid mess like some other products. The only thing which doesn't work well is the threaded screw-on dispenser cap. The thread will strip with too much lateral pressure, which always happens to me. Also, do yourself a favor and purchase one of those metal tube keys that help you squish material out of a metal tube. It will save your fingers from exessive squishing, lol.
R**R
Great product!
Great product!
D**E
3M marine grade silicone
Great stuff for my boat on installing new equipment
A**.
Good product but the tube busted
Perfect to touch up our travel trailer seals, but as in other reviews, the tube busted at the bottom so could not finish the job or get my moneys worth of product. Hope 3M fixes the packaging.
W**I
As advertised
This product, works completely as advertised. Nothing adheres any better, above or below the Waterline. My only complaint (why I gave value for money only 4 stars) is that they don't make it in any smaller quantities. Often times, you just don't need 3 fl ozs. And once you open the tube, and the air hits the end, you can't put the genie back in the bottle. It's all going to harden, used on the project, or left in the tube :-(
N**E
Great Sealant
I love this stuff. I wouldn’t use anything but it. It’s great quality. The smell isn’t strong. It’s not messy. And is great for sealing up lights and stuff to the hull.
J**S
just the Material I Needed
Strong material ...follow instructions
Trustpilot
Hace 1 mes
Hace 1 mes