Would this work as a sealant on the abs fitting that inserts into the rv poly holding tank outlet and has a hose clamp?

Re UV protection. It is widely used on RV roofs so presumably is at least UV resistant. That said, I've found that it lasts only about 3 years on the roof of an RV that sits out in the sun. It is necessary to check it annually and rough up the existing material and add more where cracks have developed. The cracks are in part from expansion and contraction of the underlying parts, but do work their way up through the Sikaflex 221 and result in a leak of the crack is not repaired. I inspect my RV roof annually and usually need to do some repair to the older Sikaflex-221.

Is this suitable for bonding a window into an aluminium u-channel on an rv? also, can i remove it if need be? thank you

Precisely the application to which I put the material to use in - sealing RV windshield to aluminum and fibreglass. Has worked flawlessly for 4 years. Easy to remove before cure; extremely difficult to fully remove after cure.

Can someone verify if inventory issue fixed, ordered two blacks and received both white (stamped inside bottom of tube)

I have always received the correct color ordered (fulfilled by Amazon). Contact the Seller directly (or whoever is fulfilling an order on their behalf), to confirm inventoried colors. I would request a refund for any product that is not what you ordered.

Do you recommend this for filling in concrete floor cracks? Will it self-level?

Not sure on concrete it may hold up but it will not self-level

Desertcart Logo

Deliver to Malaysia

For best experience Get the App

DOWNLOAD THE APP

WE SOURCE ITEMS FROM

UAE
UK
India
USA
Japan
KOREA

Customer Services

About Us

Customer Support

Description

🔧 Seal smart, seal fast—join the pros who never settle!

ECO CONSCIOUS SAFE - NSF approved for drinkable water contact with low VOCs, combining performance with peace of mind.
RAPID RELIABLE SEAL - Fast-curing formula locks in strength and elasticity for permanent seals.
VERSATILE BONDING POWER - Adheres seamlessly to wood, metal, ceramics, plastics, and more—one sealant for all projects.
WEATHERPROOF CONFIDENCE - Engineered to resist harsh weathering, ensuring long-lasting protection and durability.
FINISH READY FLEXIBILITY - Can be sanded and painted to match your design vision perfectly—no compromises.

Sika Sikaflex-221 is a high-performance, fast-curing polyurethane sealant designed for permanent elastic seals with superior adhesive strength. NSF approved for incidental food contact and drinkable water, it bonds to a wide range of materials including wood, metals, ceramics, and plastics. Weather-resistant and low in VOCs, it offers durable, stain-resistant sealing that can be sanded and painted for a flawless finish.

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.

RM117

Duties & taxes incl.

Malaysiastore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

ChatGPT - opens in a new tab Perplexity - opens in a new tab Claude - opens in a new tab Grok - opens in a new tab Google AI - opens in a new tab

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Meera L.

Smooth transaction and product arrived in perfect condition.

3 weeks ago

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

View all Trustpilot reviews

Manufacturer	Sika
Brand	SIKA
Model	Sikaflex 221
Product Dimensions	30.48 x 5.08 x 30.48 cm; 350 g
Item model number	SIKA-90892
Manufacturer Part Number	90892
Special Features	Stain resistant
Item Weight	350 g

SIKASikaflex-221, Gray, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge

Details

Description

Specifications

Have a Question? See What Others Asked

Reviews

Common Questions