What color is this when cured?

This is white. Hope that helps and thanks for your interest in our marine sealant.

can I use this to repair a crack in my hot tub? Is it safe for continual underwater use?

Yes it is safe for continued underwater use but you will want to make sure it completely cures and dries prior to submerging it. Hope that helps and thanks for your interest in Better Boat

How many Ounces is in a container

Don’t have it in front of me, but it is the size of a normal tube of caulk and will fit into a standard caulk gun.

Will this work around my stainless steel fuel tank filler neck

Yes our marine sealant will absolutely seal and adhere to your stainless steel neck. Thanks so much for your interest in our marine sealant.

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⚓ Seal your adventures with confidence—never miss a wave!

FAST CURE PAINTABLE - White curing formula sands smooth and accepts paint for seamless finishes
FLEXIBLE DURABLE BOND - Expands, contracts, and bends without cracking or losing grip
TRUSTED AMERICAN QUALITY - Crafted by boaters for boaters with strict trade-secret standards
HEAVY DUTY WATERPROOF SEAL - Stops leaks above & below waterline with marine-grade strength
MULTI SURFACE COMPATIBILITY - Adheres securely to fiberglass, glass, plastic, metal, and wood

Better Boat’s Marine Sealant is a premium 10oz elastomeric paste designed for professional-grade waterproof sealing and adhesion on boats, RVs, and more. It offers a flexible, UV and saltwater resistant bond that cures fast to a paintable white finish, adhering to multiple surfaces including wood, metal, fiberglass, and plastic. Made in the USA with boater-tested quality, it ensures durable, long-lasting repairs above and below the waterline.

Common Questions

Are the products genuine and authentic?+

Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

How long does delivery take and is it reliable?+

Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

What is Desertcart? Is it safe to order from?+

Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

How is product pricing calculated?+

Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

₨54183

Duties & taxes incl.

Sri Lankastore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

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Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ali H.

Fast shipping and excellent packaging. The Leatherman tool feels very premium and sturdy.

1 day ago

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

View all Trustpilot reviews

Colour	White
Brand	Better Boat
Liquid Volume	1E+1 Fluid Ounces
Item Form	Paste
Surface Recommendation	Wood, Fiberglass, Glass, Plastic, Metal
Water Resistance Level	Waterproof
Number of Items	1
Manufacturer	Better Boat
UPC	850009198198
Net Quantity	10 Grams
Material	Elastomeric
Model number	BB-MRSL-WHT
Item Weight	272 g
Package Dimensions	28.7 x 5.08 x 5.08 cm; 272 g
Item model number	BB-MRSL-WHT
Are batteries included?	No

Marine Sealant and Adhesive Waterproof Marine Grade Sealant for Boat and RV - White 10oz

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