---
product_id: 18443420
title: "Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, White – Fast-Curing, Permanent Elastic Bond, Weather-Resistant, Sandable & Paintable"
brand: "sika"
price: "€ 37.85"
currency: EUR
in_stock: true
reviews_count: 13
category: "Sika"
url: https://www.desertcart.sk/products/18443420-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl
store_origin: SK
region: Slovakia
---

# Fast-curing formula Weather-resistant & waterproof Multi-surface bonding power Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, White – Fast-Curing, Permanent Elastic Bond, Weather-Resistant, Sandable & Paintable

**Brand:** sika
**Price:** € 37.85
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it once, seal it right — the ultimate bond for every project.

## Quick Answers

- **What is this?** Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, White – Fast-Curing, Permanent Elastic Bond, Weather-Resistant, Sandable & Paintable by sika
- **How much does it cost?** € 37.85 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.sk](https://www.desertcart.sk/products/18443420-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl)

## Best For

- sika enthusiasts

## Why This Product

- Trusted sika brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Flexible & Strong:** Cures to a tough yet elastic seal that handles vibration and movement.
- • **Weatherproof Warrior:** Resists seawater, acids, and harsh elements for lasting durability.
- • **Pro-Grade Application:** Cartridge fits all guns for precise, mess-controlled application.
- • **Safe for Critical Use:** NSF-approved for drinking water & food production environments.
- • **Versatile Bonding Mastery:** Bonds metals, plastics, ceramics & more with permanent elasticity.

## Overview

SIKA Sikaflex-221 is a professional-grade, fast-curing polyurethane sealant and adhesive offering permanent elastic bonds across multiple surfaces. Its weather-resistant, waterproof formula withstands aging, seawater, and chemicals, making it ideal for internal and external sealing. NSF-approved for safe use in drinking water and food production, it comes in a convenient cartridge for precise application and cures to a flexible, durable finish.

## Description

When you need a professional-grade elastic seal or bond, there's one name you can trust: The Sika Sikaflex-221. This multi-purpose adhesive & sealant creates permanent bonds to a wide variety of substrates to give you maximum versatility and range. It's a low-odor, non-corrosive compound that's easy and convenient to work with. For optimal performance, surfaces should be clean and free of any debris, dirt, grease, oil, or dust, then dried prior to application. Complete tooling and finishing before skin forms, typically within an hour of use.

Review: Excellent. - Not inexpensive, but works very well. Sticks well to many different surfaces.
Review: Perfect for automotive use - I used Sikaflex to adhere a roof wing to the back windshield of my car, and I’m seriously impressed with how well it worked. The bond is incredibly strong and feels permanent once cured. I let it set for about 24 hours before driving, and even after months of highway speeds and temperature changes, the wing hasn’t budged at all. The application was pretty straightforward, it has a thick, tacky consistency that gives you enough working time to position everything correctly before it starts to set. I’d recommend taping or clamping the part in place while it cures, because it does take a while to fully harden. Once cured, it’s flexible enough to handle vibration and movement, which is great for automotive use. One thing to note: this stuff is messy. It’s sticky, and once it gets on your hands or paint, it’s not easy to remove. Wear gloves, mask off surrounding areas, and have some cleaner or mineral spirits ready. Overall, Sikaflex delivered exactly what I needed, a strong, weatherproof, and vibration resistant bond that’s holding my roof wing securely in place. It’s not the cheapest adhesive, but it’s worth it for the strength and reliability.

## Features

- VERSATILITY AND QUALITY IN ONE - Sometimes simply called Sika 221 white, this one-component urethane caulk bonds to a range of substrates, including metals, plastics, and metal primers and coatings
- AGE RESISTANT - Formulated to resist the effects of aging to better perform at peak capacity no matter the conditions. Also resists elements such as seawater, diluted acids, and caustic solutions
- READY TO USE - The Sikaflex black sealant comes in a handy cartridge that fits easily on an electric, pneumatic or manual application gun, making accurate placement of adhesive paste quick and easy
- SAFE AND EFFECTIVE - Approved by the NSF for use in both drinking water systems and food production operations, so you can rest easy knowing there's no harmful level of chemicals
- PERFECT FOR INTERNAL SEALS AND BONDING - Use it for permanent seals that you can rely on. The paste also bonds to ceramic materials and cures quickly upon exposure to atmospheric moisture

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00O9VFLRS |
| Best Sellers Rank | #947 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #3 in Polyurethane Adhesives #11 in Urethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | White |
| Customer Reviews | 4.6 out of 5 stars 2,999 Reviews |
| Global Trade Identification Number | 00338860050980 |
| Included Components | AP Products 017-90891 Sikaflex-221, White |
| Item Form | Paste |
| Item Type Name | AP Products 017-90891 Sikaflex-221, White |
| Item Weight | 10.1 ounces |
| Liquid Volume | 10.1 fluid ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Model | 017-90891 |
| Number of Items | 1 |
| Part Number | 0911.1270 |
| Surface Recommendation | Roof, Vent, Pipe |
| UPC | 338860050980 |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** SIKA
- **Color:** White
- **Item Form:** Paste
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10.1 Fluid Ounces

## Images

![Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, White – Fast-Curing, Permanent Elastic Bond, Weather-Resistant, Sandable & Paintable - Image 1](https://m.media-amazon.com/images/I/51dlzDcXfvL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Excellent.
*by T***D on June 24, 2026*

Not inexpensive, but works very well. Sticks well to many different surfaces.

### ⭐⭐⭐⭐⭐ Perfect for automotive use
*by O***A on October 6, 2025*

I used Sikaflex to adhere a roof wing to the back windshield of my car, and I’m seriously impressed with how well it worked. The bond is incredibly strong and feels permanent once cured. I let it set for about 24 hours before driving, and even after months of highway speeds and temperature changes, the wing hasn’t budged at all. The application was pretty straightforward, it has a thick, tacky consistency that gives you enough working time to position everything correctly before it starts to set. I’d recommend taping or clamping the part in place while it cures, because it does take a while to fully harden. Once cured, it’s flexible enough to handle vibration and movement, which is great for automotive use. One thing to note: this stuff is messy. It’s sticky, and once it gets on your hands or paint, it’s not easy to remove. Wear gloves, mask off surrounding areas, and have some cleaner or mineral spirits ready. Overall, Sikaflex delivered exactly what I needed, a strong, weatherproof, and vibration resistant bond that’s holding my roof wing securely in place. It’s not the cheapest adhesive, but it’s worth it for the strength and reliability.

### ⭐⭐⭐⭐⭐ quality product - glad I found it
*by D***C on May 19, 2026*

used this for a repair that needed waterproof and permanent - this applied on easy and so far 100% resolved issue! I used AI to recommend product off amazon after uploading to AI a photo of the damage and this is what it recommended.

## Frequently Bought Together

- Sika Sikaflex-221, White, multi-purpose sealant/adhesive, polyurethane fast curing sealant, 10.1 fl. oz Cartridge
- Dicor 501LSW-1 HAPS-Free Self-Leveling Lap Sealant for horizontal surfaces - 10.3 Oz, White, Secure, Ideal for RV Roofing, Maintenance, Repair, Appliance Application
- Dicor BT-1834-1 Butyl Seal Tape - 1/8" x 3/4" x 30' Repair Tape for RV, Trailer, Motorhome, Window, and Vent Sealing

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**Shop now:** [https://www.desertcart.sk/products/18443420-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl](https://www.desertcart.sk/products/18443420-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl)

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*Product available on Desertcart Slovakia*
*Store origin: SK*
*Last updated: 2026-07-25*