---
product_id: 294002535
title: "Sikaflex-221 Multi-Purpose Polyurethane SealantAdhesive, 10.1 fl oz, Black Permanent Elastic Seal, Sandable Paintable, Non-Corrosive, Bonds to Metal, Plastics More."
brand: "sika"
price: "35055 Ft"
currency: HUF
in_stock: true
reviews_count: 5
url: https://www.desertcart.hu/products/294002535-sikaflex-221-multi-purpose-polyurethane-sealantadhesive-10-1-fl-oz
store_origin: HU
region: Hungary
---

# Seawater & chemical resistant Quick curing & flexible Multi-surface bonding Sikaflex-221 Multi-Purpose Polyurethane SealantAdhesive, 10.1 fl oz, Black Permanent Elastic Seal, Sandable Paintable, Non-Corrosive, Bonds to Metal, Plastics More.

**Brand:** sika
**Price:** 35055 Ft
**Availability:** ✅ In Stock

## Summary

> 🖤 Seal it once, seal it right — Sikaflex-221 keeps your projects locked in for life!

## Quick Answers

- **What is this?** Sikaflex-221 Multi-Purpose Polyurethane SealantAdhesive, 10.1 fl oz, Black Permanent Elastic Seal, Sandable Paintable, Non-Corrosive, Bonds to Metal, Plastics More. by sika
- **How much does it cost?** 35055 Ft with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.hu](https://www.desertcart.hu/products/294002535-sikaflex-221-multi-purpose-polyurethane-sealantadhesive-10-1-fl-oz)

## 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 stands strong against seawater, acids, and harsh elements.
- • **Ultimate Versatility:** Bonds seamlessly to metal, plastics, ceramics & primers for all your project needs.
- • **Safe for Critical Use:** NSF-approved for drinking water and food production environments—trust without compromise.
- • **Effortless Application:** Cartridge fits electric, pneumatic, or manual guns for precise, mess-minimized use.
- • **Flexible & Durable Seal:** Cures quickly to a permanent, elastic bond that absorbs vibration and movement flawlessly.

## Overview

Sikaflex-221 is a premium one-component polyurethane sealant and adhesive in a convenient 10.1 fl oz cartridge. It delivers a permanent, elastic, and waterproof bond across metals, plastics, ceramics, and primers. Engineered for durability, it resists aging, seawater, acids, and caustic solutions. NSF-approved for safe use in drinking water and food production, it cures quickly upon moisture exposure and remains flexible to withstand vibration and movement, making it ideal for professional-grade sealing and bonding applications.

## Description

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.

Review: 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 brand always works

## 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 theres 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 |
| Are batteries included? | No |
| Batteries | 1 Nonstandard Battery batteries required. |
| Best Sellers Rank | #36,538 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #32 in Adhesive Caulk |
| Brand | SIKA |
| Colour | Black |
| Customer Reviews | 4.5 4.5 out of 5 stars (1,358) |
| Date First Available | 16 January 2015 |
| Item Dimensions LxWxH | 30.5 x 5.1 x 30.5 Centimeters |
| Item Form | Paste |
| Item Height | 12 Inches |
| Item Weight | 286 g |
| Item Width | 2 Inches |
| Item model number | 017-90893 |
| Liquid Volume | 10.1 Fluid Ounces |
| Manufacturer | A P Products |
| Material | Silicone |
| Model number | 017-90893 |
| Net Quantity | 300 Milliliters |
| Number of Items | 1 |
| Product Dimensions | 30.48 x 5.08 x 30.48 cm; 286.33 g |
| Surface Recommendation | Versatile, suitable for various surfaces |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** SIKA
- **Colour:** Black
- **Item Form:** Paste
- **Item Weight:** 10.1 Ounces
- **Liquid Volume:** 10.1 Fluid Ounces

## Images

![Sikaflex-221 Multi-Purpose Polyurethane SealantAdhesive, 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)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by O***A on 6 October 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.

### ⭐⭐⭐⭐⭐ Review
*by K***Y on 27 November 2023*

Great brand always works

### ⭐⭐⭐⭐⭐ Review
*by C***N on 13 September 2025*

Me ayudó con la filtración de agua en estas lluvias

## 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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*Product available on Desertcart Hungary*
*Store origin: HU*
*Last updated: 2026-02-10*