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Fast curing Sudbury elastomeric marine sealant has superior strength, adhesion, elongation and life characteristics. Adheres tenaciously to fiberglass, wood, metal, glass and plexiglass. Elastomeric sealant is perfect for heavy duty service above and below the waterline. Simple to clean up with mineral spirits. Not recommended for wood deck seams. One part
| Item # | Sealant Color | Size |
|---|---|---|
| SUD-300 | White | 10 oz. cart. |
| SUD-301 | Clear | 10 oz. cart. |
| SUD-302 | Black | 10 oz. cart. |
| SUD-320 | White | 3 oz. tube |
| SUD-321 | Clear | 3 oz. tube |
Technical Information
- Elastomeric sealant can be wet sanded and painted after curing.
- Heavy duty use above or below the waterline.
- Twists, bends, expands, compresses.
- Use elastomeric sealant adhesive to seal ports, beds hardware, and stops leaks.
- Adheres tenaciously without primers to fiberglass, glass, all plastic.
- Cures in temperatures from -20 degrees to +120 degrees fahrenheit.
Reviews for Sudbury Elastomeric Marine Sealant
February 27, 2020
Used to seal the rubber mast boot at the deck on a sailboat for waterproofing. The mast moves around 1/2" or so at the deck so regular sealants break free and leak. Injecting this stuff seals it for 5 years or so (it's elastomeric) because it flexes and moves around as the mast moves keeping it sealed. It's like honey that never gets drippy. After 5 years or so it hardens up and has to be dug out and replaced with new. Been using it for 30 years, and am concerned it's getting hard to find and is now considered Hazardous Material, which is reasonable considering the volatile solvents that flash off during application. One caveat is it has a limited shelf life even unopened, so buy it fresh, use it all and discard the container.
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July 26, 2010
I have used it above the water line water line many times bedding all types of hard ware. Have not found any faults. Beats 3M products hands down.
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