Will this work to repair cracks in my pool skimmer? Is it elastic or hard like epoxy when cured?

It is elastomeric and should work well for that I would think. I used it to seal the roof seams on a 2015 GMC pickup and it worked great. Keep in mind it is self leveling so it spreads out a bit on its own.

Would this work for adhering rubber matting to a wooden and aluminum boat deck?

yes, it would work. A permanent solution would be 3M 5200 sealant. Try a small piece first!

can i use this to attach solar panels to camper roof? pnls weigh 24pnds.

I used mine for water proofing sealant while glueing down a metal flang which weighed very little. Not sure about the solar panels

Would this work in a swimming pool. I have a concrete pool that has plexiglass windows in the sides below the water level.

I believe so, we use it on the seams of our water slide that's underwater at all times.

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Duty & taxes paid at delivery

Help Track order

Account Cart

Marine Sealant & Adhesive

Product ID: 26693033

Details

Brand
SIKA
Item Form
Oz
Material
1-C
Special Feature
Water
Specific Uses For Product
Marine

⚡High elasticity & vibration resistance

🌊Marine-grade water resistance

🛠️One-component easy application

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

Rp764801

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

Secure transaction

Description

⚓ Seal your marine projects with confidence and style!

FLEXIBLE RESILIENT - Elastic, vibration-resistant sealant that withstands harsh marine conditions without corrosion.
EFFORTLESS APPLICATION - One-component polyurethane formula fits all piston guns for smooth, mess-free use.
BROAD CHEMICAL RESISTANCE - Defies fresh & saltwater, diluted acids, fuels, and oils to keep your projects secure.
ULTIMATE MARINE PROTECTION - Seals wood, fiberglass, and metal above & below water with unmatched durability.
PAINTABLE SANDABLE FINISH - Cures to a stable black surface that can be customized for a professional look.

SIKA Sikaflex-291 LOT is a premium black, one-component polyurethane marine adhesive and sealant designed for wood, fiberglass, and metal. It offers superior elasticity, corrosion resistance, and water resistance for both fresh and saltwater environments. Easy to apply with standard piston guns, it cures to a paintable, sandable finish within 24 hours, making it ideal for durable, vibration-resistant marine and interior sealing applications.

Specifications

ASIN	B00C50GIQI
Best Sellers Rank	#15,016 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #11 in Polyurethane Adhesives #34 in Urethane Adhesives
Brand Name	SIKA
Color	Black
Compatible Material	Fiberglass, Metal, Wood
Container Type	Cartridge
Customer Reviews	4.5 4.5 out of 5 stars (328)
Full Cure Time	24 Hours
Included Components	Sealant
Item Form	Oz
Item Package Quantity	1
Item Type Name	Adhesive
Item Weight	10.1 Ounces
Manufacturer	Sika USA
Material Type	1-C polyurethane
Model	90927
Other Special Features of the Product	Water Resistant
Specific Uses For Product	Marine, Underwater
UPC	033886005289
Unit Count	10.1 Fluid Ounces
Volume	10.1 Fluid Ounces
Warranty Description	Warranty
Water Resistance Level	Water Resistant

Reviews

A**R

Good adhesive for a boating project

I used this to attach a heavy duty rub rail on my old BW Outrage (belt and suspenders approach, I didn't trust that the screws that came with the rub rail would work). It's been six months since I did the work and it seems to be holding well. Cures somewhat quickly which makes it tricky to use on a large area in summer heat. I'd use it again before the #M product.

30.01.2026

E**.

Easy to apply, looks like a good seal

I used it to seal between the body and the bottom pan of a 1970s VW Beetle I'm rebuilding. It'll take me months to find if the seal provided by this product is durable. But for now, it looks encouraging. Also, it is rated for "below the waterline", and that should be more than sufficient overkill for a Volkswagen. As I had to apply the sealant from below the car, it dripped a little bit but not badly. The product flows into place readily and can be smoothed, like caulk, with a gloved (!!!) finger. Go without gloves and have a very messy clean-up coming. The product dries to a deep glossy black. As it is paintable, I plan to spray the bottom of the car with undercoating for protection. The seals cured overnight and look confidence-inspiring.

2.03.2024

R**Y

As expected

Works good.

18.12.2025

G**T

Oh yeah

Grabbed some rubber to make a cover for the saildrive port on my sailboat; it keeps barnacles out. I wasn't expecting this to hold at all for months underwater and under sail. Still there six months later. I am amazed.

5.10.2025

A**R

On time

Great for the boat seams

21.12.2023

A**R

Great caulk

As other’s indicated, it sticks to everything. I taped the caulk lines and waited about 45 minutes before pulling tape. Could have waited another 15 to 30 minutes. Takes a while to dry. Once dry, it is solid and flexible with great adhesion

17.11.2023

I**N

Wroks great

Silkaflex is great. I had it on my engine bolts for about couple months. I had the need to take it off and was amazed that it works well. Now, this is what I use on most areas which need caulking.

22.04.2024

D**S

ITEM IS MISLABELED. SEE PHOTO

HOWEVER I WILL KEEP THE ITEM TO USE LATER. I WAS ABLE TO PURCHASE BLACK LOCALLY AS I NEEDED THE BLACK TODAY. THANKS FOR THE NORMAL GOOD SERVICE.

18.08.2024

S**Y

Good product.

1.01.2026

A**R

Excellent product for gluing storage pockets onto wetsuits or for neoprene repair.

4.02.2026

D**K

It's sikaflex works great on boats , cheaper than in town also

23.10.2025

L**A

GREAT PRODUCT

21.01.2025

C**N

30.10.2024

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Yusuf A.

Fantastic experience overall. Will recommend to friends and family.

1 month ago

Anjali K.

The product quality is outstanding. Exactly what I needed for my work.

1 month ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

Buy anything from 5,000+ international stores. One checkout price. No surprise fees. Join 2M+ shoppers on Desertcart.

Rp764801

Duties & taxes included

In stock

Sold byAmazon IndonesiaDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to Indonesia.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

View all Trustpilot reviews