---
product_id: 50806593
title: "Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml"
brand: "sika"
price: "$79.15"
currency: USD
in_stock: true
reviews_count: 10
category: "Sika"
url: https://www.desertcart.ec/products/50806593-sika-sikaflex-221-strong-adhesive-sealant-multi-purpose-application-sandable
store_origin: EC
region: Ecuador
---

# 45 min open time High adhesive strength Sandable & paintable Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml

**Brand:** sika
**Price:** $79.15
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal it strong, seal it smart – the pro’s choice for lasting bonds!

## Quick Answers

- **What is this?** Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml by sika
- **How much does it cost?** $79.15 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ec](https://www.desertcart.ec/products/50806593-sika-sikaflex-221-strong-adhesive-sealant-multi-purpose-application-sandable)

## 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

- • **Pro-Level Adhesion:** Bonds metals, plastics & ceramics with unmatched strength
- • **Custom Finish Ready:** Sandable and paintable to blend seamlessly with any project
- • **Food-Safe Certified:** NSF-approved for incidental food contact, safe for professional use
- • **Extended Work Window:** 45 minutes of open time for precise, mess-free application
- • **Flexible & Durable Seal:** Permanently elastic to resist cracking from movement or vibration

## Overview

Sikaflex 221 is a professional-grade, multi-purpose polyurethane adhesive and sealant offering superior bonding strength across diverse materials. It cures into a permanently elastic, sandable, and paintable seal, with a generous 45-minute open time for flawless application. NSF-approved for incidental food contact, this black 300ml cartridge is ideal for automotive, construction, and general repair tasks demanding durable, flexible, and high-performance sealing.

## Description

Versatile, high-strength sealant and adhesive that cures into a permanently elastic, sandable, and paintable seal, suitable for bonding a wide range of materials.

Review: Extremely Strong Adhesion, Professional Quality - This is not comparable to standard DIY sealants you might find in typical hardware stores. I’ve used Sikaflex 221 several times over the past year for various automotive and general fixing jobs, and the performance is far superior to basic alternatives. The adhesive strength is excellent. Once applied, it bonds very firmly and creates a durable, flexible seal. It works well on multiple surfaces including metal and plastic, making it ideal for vehicle modifications and exterior applications. It’s especially useful where a strong, permanent bond is required. After curing, it remains slightly flexible, which helps prevent cracking due to vibration or movement. One important thing to be aware of is how sticky it is. If it gets on your hands, tools, or unintended surfaces, it can be difficult to remove. Careful application and preparation are essential. Pros: • Extremely strong adhesion • Professional-grade quality • Works on multiple surfaces • Flexible once cured • Ideal for automotive and outdoor use Cons: • Difficult to remove if applied accidentally • Requires careful handling during application Overall: A high-quality adhesive and sealant that provides excellent strength and durability. Ideal for automotive, DIY, and permanent bonding applications where reliability is important.
Review: SilkaGenius - Super sticky. Top stuff

## Features

- Causes damage to organs through prolonged or repeated exposure.
- Contains epoxy constituents. May produce an allergic reaction.
- Contains isocyanates. May produce an allergic reaction.
- May cause allergy or asthma symptoms or breathing difficulties if inhaled.
- May cause an allergic skin reaction.
- May cause damage to organs through prolonged or repeated exposure.
- Suspected of causing cancer.
- PROFESSIONAL USE PRODUCT – This is product is suitable for experienced professional users only.
- LONG-OPEN TIME – Sikaflex 221 remains workable for up to 45 minutes once open and will develop a skin in 60 minutes, providing temperatures are between 5˚C and 40˚C.
- VERSATILE – A multi-purpose sealant and adhesive with high adhesive strength. Bonds well to a wide variety of substrates, including metals, ceramics, plastics and painted materials.
- PERMANENTLY ELASTIC – Cures using ambient moisture into an elastic but permanent seal that does not sag and can be sanded and painted as needed.
- FOOD SAFE – NSF-Approved for incidental food contact.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B00DUX6PY4 |
| Batteries Required? | No |
| Batteries included? | No |
| Best Sellers Rank | 2,564 in DIY & Tools ( See Top 100 in DIY & Tools ) 65 in Sealers |
| Colour | Black |
| Customer Reviews | 4.6 4.6 out of 5 stars (641) |
| Date First Available | 28 Feb. 2015 |
| Included components | 1x Cartridge |
| Item Package Quantity | 1 |
| Item Weight | 0.44 g |
| Item model number | 221 |
| Manufacturer | Sika Everbuild |
| Material | Polyurethane |
| Part number | SIKAFLEX221/40 |
| Product Dimensions | 5 x 5 x 23 cm; 0.44 g |
| Special Features | Strong |
| Style | Compact |

## Product Details

- **Brand:** Sika
- **Item dimensions L x W x H:** 50 x 50 x 230 millimetres
- **Item weight:** 0.45 Grams
- **Material:** Polyurethane
- **Style:** Compact

## Images

![Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml - Image 1](https://m.media-amazon.com/images/I/61SFNQD1hfL.jpg)
![Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml - Image 2](https://m.media-amazon.com/images/I/81b2EKbaTxL.jpg)
![Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml - Image 3](https://m.media-amazon.com/images/I/81nhp0FUYDL.jpg)
![Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml - Image 4](https://m.media-amazon.com/images/I/81e2Vzx2JcL.jpg)
![Sika – Sikaflex – 221 Strong Adhesive Sealant – Multi-Purpose Application – Sandable/Paintable – Black – 300ml - Image 5](https://m.media-amazon.com/images/I/81cuXQQf8DL.jpg)

## Questions & Answers

**Q: Hi. I have a convertible and the rear window must be glued back. Has everyone was use it for this type of repair? Or similar? Thanks**
A: This would be a good adhesive for this type of repair and should solve your problem

**Q: Which type of Silka is the best to stick the feet of my solar panel to the roof of my Camper**
A: Sikaflex 221 is one of the best to do this

**Q: Can it be used for sealing windscreen rubber**
A: Hi, we would recommend a test prior to a full application as rubber does vary.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Extremely Strong Adhesion, Professional Quality
*by C***L on 16 February 2026*

This is not comparable to standard DIY sealants you might find in typical hardware stores. I’ve used Sikaflex 221 several times over the past year for various automotive and general fixing jobs, and the performance is far superior to basic alternatives. The adhesive strength is excellent. Once applied, it bonds very firmly and creates a durable, flexible seal. It works well on multiple surfaces including metal and plastic, making it ideal for vehicle modifications and exterior applications. It’s especially useful where a strong, permanent bond is required. After curing, it remains slightly flexible, which helps prevent cracking due to vibration or movement. One important thing to be aware of is how sticky it is. If it gets on your hands, tools, or unintended surfaces, it can be difficult to remove. Careful application and preparation are essential. Pros: • Extremely strong adhesion • Professional-grade quality • Works on multiple surfaces • Flexible once cured • Ideal for automotive and outdoor use Cons: • Difficult to remove if applied accidentally • Requires careful handling during application Overall: A high-quality adhesive and sealant that provides excellent strength and durability. Ideal for automotive, DIY, and permanent bonding applications where reliability is important.

### ⭐⭐⭐⭐⭐ SilkaGenius
*by A***R on 13 February 2026*

Super sticky. Top stuff

### ⭐⭐⭐⭐⭐ Professional grade product at reasonable prices
*by B***R on 6 February 2026*

Sika products are seriously good products, expensive but worth every penny. I used this to bond 12mm marine ply to line the tops of the doors on my van , use disposable gloves because it will tack and stick to pretty much everything…. Its leak prevention is excellent, easy to use and very effective. Be warned though it sticks to everything so be careful you don’t get it on anything you don’t want it on because it’s almost impossible to remove easily. Sika make a lot of very specific products so do a little research first to find the exact product for your particular task …… you will be surprised at what they actually provide. This is professional grade products, very strong and can be used as a sealer as well as an adhesive. I found that if you wrap up the tube after use and seal it I can actually get a few days use out of the tube before it finally hardens..

## Frequently Bought Together

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**Shop now:** [https://www.desertcart.ec/products/50806593-sika-sikaflex-221-strong-adhesive-sealant-multi-purpose-application-sandable](https://www.desertcart.ec/products/50806593-sika-sikaflex-221-strong-adhesive-sealant-multi-purpose-application-sandable)

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*Product available on Desertcart Ecuador*
*Store origin: EC*
*Last updated: 2026-03-11*