---
product_id: 48678586
title: "STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters"
brand: "stormguard"
price: "278.02 DT"
currency: TND
in_stock: true
reviews_count: 13
category: "Stormguard"
url: https://www.desertcart.tn/products/48678586-stormguard-21sr3970020b-upvc-replacement-door-and-window-rubber-seal-black
store_origin: TN
region: Tunisia
---

# 20 meters length - versatile coverage Easy push-in groove installation Custom cut to fit any UPVC frame STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters

**Brand:** stormguard
**Price:** 278.02 DT
**Availability:** ✅ In Stock

## Summary

> 🚪 Seal the deal on comfort and style—upgrade your space effortlessly!

## Quick Answers

- **What is this?** STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters by stormguard
- **How much does it cost?** 278.02 DT with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.tn](https://www.desertcart.tn/products/48678586-stormguard-21sr3970020b-upvc-replacement-door-and-window-rubber-seal-black)

## Best For

- stormguard enthusiasts

## Why This Product

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

## Key Features

- • **Tailor-Made Precision:** Cut to your exact size for a perfect, bespoke seal every time.
- • **Tool-Free Installation:** Simply push into the existing groove—no tools, no hassle, no stress.
- • **Enhanced Energy Efficiency:** Eliminate drafts and reduce energy bills with a snug, airtight seal.
- • **Sleek, Professional Finish:** Restore your doors and windows to showroom condition with a clean, modern look.
- • **Universal Fit for UPVC Frames:** Seamlessly compatible with all UPVC door and window frames for a flawless upgrade.

## Overview

The STORMGUARD 21SR3970020B is a 20-meter black rubber seal designed for UPVC doors and windows. It offers universal compatibility, easy push-in installation without tools, and can be cut to size for a perfect fit. This durable, pre-lubricated seal enhances energy efficiency by eliminating drafts, while giving your frames a sleek, refreshed appearance. Trusted by thousands, it’s the smart, cost-effective solution to upgrade your home’s comfort and style.

## Description

From the manufacturer We enjoy the challenge of providing simple yet cost effective design solutions to a constantly changing and developing market place. We do this through innovation and a co-operative attitude. Stormguard has built its reputation upon good quality, functional, cost effective products and services and commitment to our customers. We have responded to the challenges of 21st Century business in the UK by investment in technology, management systems and people, all of which is required to succeed whilst maintaining our belief in the traditional values of integrity, trust and respect for others. About us Stormguard is a family run company established in Macclesfield in 1810. We are one of the leader in the UK in the manufacture and supply of rain and draught excluders for doors and windows. The main market sectors we trade in are retail DIY, wholesalers, builder’s merchants, OEM; door set manufacturers, joinery and composite door manufacturers, UPVC fabricators and extruders. From humble beginnings, Stormguard has grown and diversified business activities combining the Stormguard high level rain and draught excluder business with aluminium Rainwater systems for domestic and commercial requirements at Stormguard Rainwater; complete home and public flood defence systems at Stormguard Flood Plan; digital and wide format printing at Spiral Colour and domestic sliding door gear systems with the Slik Sliding Door Gear range available from Stormguard.

Review: Wish I’d done this years ago - excellent product. - Our conservatory is over 20 years old and the original door gasket seals had perished. They were brittle and hard, so sitting near the door in the winter meant you could feel a definite draught. Over the years I had tried to fix the problem with those stick on strips you can buy from DIY stores but they looked messy and were never man enough for the job. I had a glazing firm in who said that the original ones were no longer made - usual story - so I thought I take a chance and order online. I did some research and because they were in a state, I measured a bit of the old gasket as accurately as I could. This universal seal is perfect! So easy to fit, I was getting suspicious! The arrow head part just popped into the groove with a little bit of pressure, I got away without needed washing up liquid, but a great tip. As others have mentioned, there does seem to be a little bit of lubricant on already which definitely helped. I found that it pays to be a bit careful to keep checking that when you are pushing the seal in, to go back and check that where you first started hasn’t slid along, especially before you cut of the excess at the end. If it has moved, it’s easy just to push it back into place with a bit of thumb pressure. The worst part of the whole job was pulling and digging out the original seal from the grooves, especially at the base. I’m so pleased with the final result. As well as being more efficient, the door looks clean and brand new - better than it has for years. I don’t know why I didn’t do this ages ago.
Review: Easy to fit with no tools - Ordered yesterday, arrived today. Hardest bit was getting the old gasket out as it was so brittle. Used a very small flat head screwdriver in the groove to get all the old bits out then hoovered it, gave it a brush out with an old toothbrush and one more hoover to make sure there was no dust left. I didn't want to get it wet with any cleaning solutions to make it easier to fit the new gasket. The gasket comes neatly wound in a plastic tub with an airtight lid, pre-lubricated. I started at the top of the frame in the middle of the door and worked it all the way around back to the top without having to cut it once. It's flexible enough to go around the corners of the frame. I found that pushing the gasket into the groove and then wiggling my finger with pressure cross-ways against the direction of the gasket stopped me stretching it and ensured that the arrow-head shape on the gasket was tucked properly in on both sides. I turned the tub on the floor every so often to stop the gasket being twisted - this way I only needed to get out of the tub as much gasket as I needed to follow it around the frame. It was done in 10 minutes and looks like new now with a really good fit against the door. Very pleased with result.

## Features

- fits all upvc frames
- can be cut to size
- pushes into the existing grove

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B005346O2Q |
| Best Sellers Rank | 347,998 in DIY & Tools ( See Top 100 in DIY & Tools ) 107,603 in Hardware |
| Brand | STORMGUARD |
| Colour | Black |
| Country of Origin | United Kingdom |
| Customer Reviews | 4.5 out of 5 stars 997 Reviews |
| Global Trade Identification Number | 00708747940206, 03619989872514, 05017259001578 |
| Included Components | 1 x Upvc Seal |
| Item Weight | 1.32 Pounds |
| Manufacturer | STORMGUARD |
| Manufacturer Warranty Description | No guarantee. |
| Material | Rubber |
| Model Number | 21SR3970020B |
| Number of Items | 1 |
| Number of items | 1 |
| Part Number | 21SR3970020B |
| Recommended Uses For Product | replacing damaged or worn out seals in uPVC door and window frames |
| Recommended uses for product | replacing damaged or worn out seals in uPVC door and window frames |
| UPC | 708747940206 |
| Unit Count | 1.0 count |

## Product Details

- **Brand:** STORMGUARD
- **Colour:** Black
- **Material:** Rubber
- **Recommended uses for product:** replacing damaged or worn out seals in uPVC door and window frames
- **UPC:** 708747940206

## Images

![STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters - Image 1](https://m.media-amazon.com/images/I/61bVnhQd7RL.jpg)
![STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters - Image 2](https://m.media-amazon.com/images/I/71NnRfYgbQL.jpg)
![STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters - Image 3](https://m.media-amazon.com/images/I/41+0HLZZLbL.jpg)
![STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters - Image 4](https://m.media-amazon.com/images/I/915C6NTu8ML.jpg)
![STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters - Image 5](https://m.media-amazon.com/images/I/913Ys8PM2mL.jpg)

## Questions & Answers

**Q: Is there a tool that helps with pushing the seal into place? It's really hard to get it pushed into place on my windows and feel that I could do with**
A: There's no tool to help. Make sure the window runner is clean then to make it easier use a cloth with some washing up liquid on, wipe the runner 1st with it and this should help it slide on easier.

**Q: Does this product fit all double glazed windoes and doors ?**
A: We cannot guarantee it fits ALL as there are so many different types/styles/sizes but it is a universal seal and fits most upvc frames.

**Q: can this be used externally around the glass between glass and upvc frame? The original wedge gasket has shrunk and water is coming in window.**
A: I don't think so. I used it for frame round upvc door which was perfect.

**Q: How well does this block sound from entering and escaping the room (of an internal door)? Does this create a 100% airtight seal aswell? Thanks**
A: This rubber seal is a replacement seal for upvc door and windows. I would not use it on any other type of door and would struggle to believe that you have upvc internal doors in your house. I think that foam strip would be better solution for internal doors. No matter what seal you fit the door must apply gentle pressure on it without any gaps to ensure good seal.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Wish I’d done this years ago - excellent product.
*by S***. on 15 June 2019*

Our conservatory is over 20 years old and the original door gasket seals had perished. They were brittle and hard, so sitting near the door in the winter meant you could feel a definite draught. Over the years I had tried to fix the problem with those stick on strips you can buy from DIY stores but they looked messy and were never man enough for the job. I had a glazing firm in who said that the original ones were no longer made - usual story - so I thought I take a chance and order online. I did some research and because they were in a state, I measured a bit of the old gasket as accurately as I could. This universal seal is perfect! So easy to fit, I was getting suspicious! The arrow head part just popped into the groove with a little bit of pressure, I got away without needed washing up liquid, but a great tip. As others have mentioned, there does seem to be a little bit of lubricant on already which definitely helped. I found that it pays to be a bit careful to keep checking that when you are pushing the seal in, to go back and check that where you first started hasn’t slid along, especially before you cut of the excess at the end. If it has moved, it’s easy just to push it back into place with a bit of thumb pressure. The worst part of the whole job was pulling and digging out the original seal from the grooves, especially at the base. I’m so pleased with the final result. As well as being more efficient, the door looks clean and brand new - better than it has for years. I don’t know why I didn’t do this ages ago.

### ⭐⭐⭐⭐⭐ Easy to fit with no tools
*by P***E on 24 May 2020*

Ordered yesterday, arrived today. Hardest bit was getting the old gasket out as it was so brittle. Used a very small flat head screwdriver in the groove to get all the old bits out then hoovered it, gave it a brush out with an old toothbrush and one more hoover to make sure there was no dust left. I didn't want to get it wet with any cleaning solutions to make it easier to fit the new gasket. The gasket comes neatly wound in a plastic tub with an airtight lid, pre-lubricated. I started at the top of the frame in the middle of the door and worked it all the way around back to the top without having to cut it once. It's flexible enough to go around the corners of the frame. I found that pushing the gasket into the groove and then wiggling my finger with pressure cross-ways against the direction of the gasket stopped me stretching it and ensured that the arrow-head shape on the gasket was tucked properly in on both sides. I turned the tub on the floor every so often to stop the gasket being twisted - this way I only needed to get out of the tub as much gasket as I needed to follow it around the frame. It was done in 10 minutes and looks like new now with a really good fit against the door. Very pleased with result.

### ⭐⭐⭐⭐ Not bad and cheaper than a new door
*by M***A on 12 October 2017*

Not bad, a little slack in the groove so feels like it will just fall out, however after a couple of weeks fitted in both a window and a French door it hasn't fallen out yet. Seals well enough but we did have a whistle through the door when it was very windy. A slight adjustment to the corner of the seal pretty much sorted that.

## Frequently Bought Together

- STORMGUARD 21SR3970020B UPVC Replacement Door and Window Rubber Seal - Black, 20 meters
- uPVC Window & Door Gasket Seal Double Glazing Bubble Rubber Repair Draught Seal B035 White (Per Metre)

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*Product available on Desertcart Tunisia*
*Store origin: TN*
*Last updated: 2026-08-07*