---
product_id: 431751421
title: "Sika Flex 522 Caravan Steel Grey 300 ml STP Universal Adhesive, Sealant, UV"
brand: "sika"
price: "$44.61"
currency: USD
in_stock: true
reviews_count: 13
category: "Sika"
url: https://www.desertcart.us/products/431751421-sika-flex-522-caravan-steel-grey-300-ml-stp-universal
store_origin: US
region: United States of America
---

# Eco-certified, low-emission & food-safe UV-stable for long outdoor durability 300 ml versatile sealant volume Sika Flex 522 Caravan Steel Grey 300 ml STP Universal Adhesive, Sealant, UV

**Brand:** sika
**Price:** $44.61
**Availability:** ✅ In Stock

## Summary

> 🔧 Seal your adventure with confidence — the ultimate all-weather, eco-smart adhesive!

## Quick Answers

- **What is this?** Sika Flex 522 Caravan Steel Grey 300 ml STP Universal Adhesive, Sealant, UV by sika
- **How much does it cost?** $44.61 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/431751421-sika-flex-522-caravan-steel-grey-300-ml-stp-universal)

## 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

- • **Multi-Surface Mastery:** Bonds effortlessly to wood, metal, ceramics, plastics, and varnished surfaces—perfect for caravans, motor-homes, and more.
- • **All-in-One Universal Sealant:** Replaces multiple products with superior weather, UV, and mould resistance for indoor & outdoor use.
- • **Built to Last in Any Climate:** Weatherproof and ageing-resistant formula ensures your seals stay strong through sun, rain, and time.
- • **Eco-Friendly & Health-Conscious:** Isega & Emicode EC1Plus certified, free from isocyanates, solvents, phthalates, and silicones—safe for kitchens and living spaces.
- • **Trusted by DIY Pros & Van Lifers:** Top-rated with 4.7 stars and proven performance in camper conversions and roof vent installations.

## Overview

Sika Flex 522 Caravan Steel Grey is a 300 ml universal adhesive and sealant designed for both indoor and outdoor applications. It offers superior UV, weather, and mould resistance while being eco-certified and free from harmful chemicals. Ideal for sealing joints on caravans, motor-homes, kitchens, and ventilation systems, it bonds to a wide range of surfaces including wood, metal, ceramics, and plastics. Highly rated by users for durability and ease of use, it replaces older Sikaflex versions with enhanced performance.

## Description

Sika Flex 522 Caravan Steel Grey 300 ml STP Universal Adhesive, Sealant, UV : desertcart.co.uk: Automotive

Review: Great. Does the job well. - Great item. Used in a van conversion for adhesive fitting solar panels and a roof vent. So far all waterproof and well stuck. Very pleased. Easy to use but does stain if you get it where you don't want it so he careful and neat!
Review: Good quality sealant - Good quality sealant, fixed my camper roof vent nicely

## Features

- Harmful to aquatic life with long lasting effects.
- May cause an allergic skin reaction.
- Version: Sikaflex-522 replaces Sikaflex-521 UV and Sikaflex-221i – 1 all-round product with even better properties
- Features: weather-resistant, UV-stable, mould-resistant and resistant to ageing
- Can be applied indoors and outdoors: For sealing exterior joints, windows, flaps, kitchen units, sanitary areas on caravans and motor-homes; also suitable for air conditioning and ventilation devices
- Sticks to common surfaces: e.g; suitable substrates are wood, metals, primers and varnishes (2K systems), ceramic materials and plastics
- Suitable for food, low-emission, certified: Isega-certified, harmless under food law (e.g; seal in the kitchen); emicode EC1Plus-certified, meets the highest EHS criteria (environment, health, safety); meets hygiene requirements for air conditioning and ventilation systems according to VDI 6022; sikaflex-522 is free from isocyanate, solvents, phthalates and silicones

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B09N7J125B |
| Best Sellers Rank | 12,031 in DIY & Tools ( See Top 100 in DIY & Tools ) 265 in Sealers |
| Brand | Sika |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,514) |
| Date First Available | 10 Dec. 2021 |
| Item Weight | 350 g |
| Item model number | 688360 |
| Manufacturer | Sika |
| Manufacturer part number | 688360 |
| Model | Sikaflex-522 |
| Product Dimensions | 4.8 x 4.8 x 2.3 cm; 350 g |
| Special Features | Free from isocyanate, solvents and phthalates |

## Product Details

- **Brand:** Sika
- **Item dimensions L x W x H:** 48 x 48 x 23 millimetres
- **Item weight:** 350 Grams
- **Material:** Silane-terminated polymer (STP)
- **Style:** Sikaflex-522

## Images

![Sika Flex 522 Caravan Steel Grey 300 ml STP Universal Adhesive, Sealant, UV - Image 1](https://m.media-amazon.com/images/I/51KJpaUe3uL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Great. Does the job well.
*by C***R on 11 May 2025*

Great item. Used in a van conversion for adhesive fitting solar panels and a roof vent. So far all waterproof and well stuck. Very pleased. Easy to use but does stain if you get it where you don't want it so he careful and neat!

### ⭐⭐⭐⭐⭐ Good quality sealant
*by G***T on 28 September 2025*

Good quality sealant, fixed my camper roof vent nicely

### ⭐⭐⭐⭐⭐ Better than Silicone
*by T***N on 6 August 2025*

Great quality and sticks used in caravan bathroom to seal the shower. Better than silicone.

## Frequently Bought Together

- Sika Flex 522 Caravan Steel Grey 300 ml STP Universal Adhesive, Sealant, UV
- Sika Sikaflex-522 Caravan And Motorhome Adhesive Sealant – Weather And Mould Resistant – White – 300ml
- Sikaflex-522 weather-resistant, UV-stable, adhesive sealant (new version of Sikaflex-521 UV and Sikaflex-221i) 300ml black

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**Shop now:** [https://www.desertcart.us/products/431751421-sika-flex-522-caravan-steel-grey-300-ml-stp-universal](https://www.desertcart.us/products/431751421-sika-flex-522-caravan-steel-grey-300-ml-stp-universal)

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-03-14*