---
product_id: 19276946
title: "Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, Black – Permanent Elastic Seal, Sandable & Paintable, Non-Corrosive, Bonds to Metal, Plastics & More"
brand: "sika"
price: "€ 33.31"
currency: EUR
in_stock: true
reviews_count: 8
category: "Sika"
url: https://www.desertcart.hr/products/19276946-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl
store_origin: HR
region: Croatia
---

# 10.1 fl oz precision cartridge Bonds metal, plastics & ceramics Permanent elastic, weatherproof bond Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, Black – Permanent Elastic Seal, Sandable & Paintable, Non-Corrosive, Bonds to Metal, Plastics & More

**Brand:** sika
**Price:** € 33.31
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal it like a pro — permanent, powerful, and perfectly black.

## Quick Answers

- **What is this?** Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, Black – Permanent Elastic Seal, Sandable & Paintable, Non-Corrosive, Bonds to Metal, Plastics & More by sika
- **How much does it cost?** € 33.31 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hr](https://www.desertcart.hr/products/19276946-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

- • **Built to Last:** Age-resistant formula defies seawater, acids, and harsh elements for enduring performance.
- • **Safe & Certified:** NSF-approved for drinking water and food production—industrial strength without compromise.
- • **Flexible Strength:** Cures to a permanent, sandable, paintable, and vibration-resistant seal that adapts to movement.
- • **Versatile Mastery:** One-component polyurethane seals & bonds metals, plastics, wood, and glass with unmatched reliability.
- • **Pro-Grade Application:** Ready-to-use cartridge fits all standard guns for clean, precise, and efficient application every time.

## Overview

Sikaflex-221 is a professional-grade, multi-purpose polyurethane sealant and adhesive in a convenient 10.1 fl oz cartridge. It delivers a permanent, elastic, and waterproof bond to metals, plastics, ceramics, wood, and glass. Engineered for durability, it resists aging, seawater, and chemicals while being NSF-approved for safe use in drinking water and food environments. Its sandable and paintable finish, combined with easy application and quick curing, makes it the go-to sealant for automotive, industrial, and home projects demanding lasting strength and flexibility.

## 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: 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.
Review: Great stuff for RV - Oh this is the stuff you want working on bare metal airstream! Works very well on vertical walls, you can probably use it on the roof too but this isnt self leveling. Used it to seal all the marker lights, windows, doors, etc.

## Features

- VERSATILITY AND QUALITY IN ONE - Sometimes simply called Sika 221 black, 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 | B00NW5LWHA |
| Best Sellers Rank | #2,061 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #4 in Polyurethane Adhesives |
| Brand | SIKA |
| Brand Name | SIKA |
| Color | Black |
| Customer Reviews | 4.5 out of 5 stars 2,788 Reviews |
| EU Spare Part Availability Duration | 5 Years |
| Full Cure Time | 3 Hours |
| Included Components | AP Products 017-90893 Sikaflex-221, Black |
| Item Form | Paste |
| Item Type Name | AP Products 017-90893 Sikaflex-221, Black |
| Item Weight | 10.1 Ounces |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | SIKA |
| Material Type | Polyurethane |
| Surface Recommendation | Metal, Wood, Glass |
| Unit Count | 10.1 Fluid Ounces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** SIKA
- **Color:** Black
- **Full Cure Time:** 3 Hours
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10.1 Fluid Ounces

## Images

![Sikaflex-221 Multi-Purpose Polyurethane Sealant/Adhesive, 10.1 fl oz, Black – Permanent Elastic Seal, Sandable & Paintable, Non-Corrosive, Bonds to Metal, Plastics & More - Image 1](https://m.media-amazon.com/images/I/6177TD7R3eL.jpg)

## Available Options

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

## Customer Reviews

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ Great stuff for RV
*by I***S on February 6, 2026*

Oh this is the stuff you want working on bare metal airstream! Works very well on vertical walls, you can probably use it on the roof too but this isnt self leveling. Used it to seal all the marker lights, windows, doors, etc.

### ⭐⭐⭐⭐⭐ Great stuff
*by H***D on January 1, 2026*

This stuff is fantastic, especially for bonding hard to glue plastics. Be sure to wear gloves - it is very durable on skin!

## Frequently Bought Together

- Sika Sikaflex-221 - Black - Multi-Purpose Polyurethane sealant/Adhesive - Creates Permanent Elastic Seal - Sandable/paintable - Non-Corrosive - 10.1 fl oz
- Dicor 551LSB-1 HAPS-Free NON-Leveling Lap Sealant - 10.3 Oz, Black, 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.hr/products/19276946-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl](https://www.desertcart.hr/products/19276946-sikaflex-221-multi-purpose-polyurethane-sealant-adhesive-10-1-fl)

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*Product available on Desertcart Croatia*
*Store origin: HR*
*Last updated: 2026-02-26*