BoatLIFE Marine Silicone Rubber

$13.52Limited StockSee Product Details

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BoatLIFE

BoatLIFE Marine Silicone Rubber

$13.52Limited StockSee Product Details

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Product Details Info & Guides Data Sheets

Product Details

BoatLIFE Marine Silicone Rubber can be used to seal thru hulls, ports, hatches, and windows to fiberglass, wood, and metal. Marine Silicone Rubber is an all purpose, non-corrosive, non-yellowing, low-odor 100% marine high quality silicone sealant.

Boatlife Marine Silicone Rubber becomes tack free in 30 minutes or less. Properly applied, it will come to a full cure in 24 hours. Use above or below the waterline. Will not shrink, crack or dry out. Makes an ideal bedding compound above the waterline.

Info & Guides

Specific Marine Applications for Boatlife Silicone Rubber:
Ports, windshields, cleats, chocks, thru hull fittings. Recommended for above waterline use. It adheres permanently to most marine construction materials and bonds to itself.

SURFACE PREPARATION:
The surface must be dry and free from grease, oil and other contaminants. Cut back any weathered surfaces and dry rot by routing, sanding, or sawing to solid wood. We recommend a thorough washing with an oil free solvent such as BoatLIFE Life-Calk Solvent and Cleaner. No Priming is required. Painting should be accomplished prior to applying sealant.

Technical Information

Skin time: 10 minutes - cures overnight
Shore A Hardness: 1 day @ 75 F, 20, 7 days @ 75 F, 28 - 30
Tear Strength: 25 lbs/inch
100 modulus: 52psi
Elongation at Breaks: 350%
Operating temperature range: -65 degrees to 400 degrees F
Recovery from elongation: 100%

Data Sheets

How Tos, Boat Life Deck Seam Caulking

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Caulking and Marine Sealant Coverage Chart

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Reviews

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11 to 10 of 3 Reviews

1 Ratings-Only Review

Questions

1 - 10 of 11 Questions

Q: I have a late 90's boat and their is a gap under the rubrail that encountered some gasoline causing it to detach. I have soaped and cleaned and mechanically removed most of what I believe is silicone. So, will this stuff be thick enough using the caulk gun to run a thick bead without it dripping like some silicone? Not sure if its possibly sika 291 or oldschool silicone. Not sure how to check either. Thanks in advance

a year ago

1 Answer

A: It is essentially the same thing as silicone.

a year ago

Helpful?

Q: Will this product cure in temperatures just above freezing?

6 years ago

3 Answers

A: Silicone caulk will not freeze and is unaffected by temperature, ideal temperature is 40 degrees but will cure below freezing.

6 years ago

Helpful?

Q: I am replacing some cast acrylic windows/portholes in gel coat fiberglass. The Mfg. used this exact Marine Silicone Rubber, as will I to seal the new ones. The included instructions call for a good surface wash-down with an ""oil-free solvent such as Life Calk Solvent + Cleaner"". ""Oil-Free"" solvent has caught me off guard. My question: What would be a good replacement ""oil-free"" solvent I might use instead? Acetone? Xylene? Mineral Spirits? etc., etc.? A call to BoatLife tech support was no help with the ""Tech Guy"" gone and returning next week, to late for my project plans. Thank you for your help.

6 years ago

8 Answers

A: Strong solvents will quickly damage the acrylic or Lexan windows and ports. Joy, Palmolive, Windex with ammonia seem to be safe from a few manufacturers of the polycarbonate plastics, but you must contact the manufacturer of the acrylic for the appropriate cleaner to seal it in properly. DO NOT use acetone, MEK, Xylene, Toluene at all.

6 years ago

Helpful?

Q: can this sealant be used on plastic? Specifically a lowrance unit in a dash?

9 years ago

4 Answers

A: Silicone caulks are best for sealing plastic. The better non-silicone caulks use polysulfides which can melt plastic.

9 years ago

Helpful?

Q: can this be used to bed a piece of acrylic in a bronze portlight frame?

11 years ago

2 Answers

A: I didn't use this product for such an application, so I cannot comment on how well it would perform. However, for sealing gel coated fiberglass joints, it has performed very good.

11 years ago

Helpful?

Q: I have a leaky port light above the bed. On inspection it appears the cut out that was done on the hull was made too big resulting in a minimal lip for the port to adhere to. The correct fix would be to fill in and re cut the hull to a better fit but for now I wish to just re-bed the port to stop leaks and tackle the bigger job later. I do not want an aggressive bedding compound which will be impossible to remove later. Would this product be suitable? Any other comments?

11 years ago

1 Answer

A: No matter what you use, since there is no solid hull structure behind the port light to form a seal and tighten the fixture against it will continue to leak.

11 years ago

Helpful?

Q: can this product be used to fill a screw hole on the outside bottom of fiberglass boat?

12 years ago

1 Answer

A: Check the manufacturer's specs. I don't think that silicone is a good choice for below the waterline applications. Try Lifecaulk instead.

12 years ago

Helpful?

Q: can i use this to patch a 500 gal. water hauler that has a 2 inch crack in the bottom?

13 years ago

1 Answer

A: I found the product was excellent for my purpose. Whether it is what you should use for your rather demanding application, I couldn't say. It was the best silicone I have ever used, so if a good silicone will do your job, try it.

13 years ago

Helpful?

Q: where can i find marine caulk in gray?

13 years ago

2 Answers

A: Do you know a Navy man?

13 years ago

Helpful?

Q: do you think this could be used to seal an electrical connection under water ?

13 years ago

1 Answer

A: Dave, I bought this product in 2008 and haven't even the recollection on why I needed it. I'm sorry, but I have no idea if it would or would not work under water.

13 years ago

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