---
product_id: 64045960
title: "Seam Sealing Tape WBM FX-420 – Hot Melt - Waterproof PVC Coated Fabrics – Repair Tape - 20 Metres - Iron On (Clear (Transparent), 20mm Width)"
brand: "wbm seam tapes"
price: "169 Lei"
currency: RON
in_stock: true
reviews_count: 4
url: https://www.desertcart.ro/products/64045960-seam-sealing-tape-wbm-fx-420-hot-melt-waterproof-pvc
store_origin: RO
region: Romania
---

# Waterproof & flexible seal 20m length for extensive coverage Iron-on application at 135-150°C Seam Sealing Tape WBM FX-420 – Hot Melt - Waterproof PVC Coated Fabrics – Repair Tape - 20 Metres - Iron On (Clear (Transparent), 20mm Width)

**Brand:** wbm seam tapes
**Price:** 169 Lei
**Availability:** ✅ In Stock

## Summary

> 🔥 Seal it, feel it, never leak it! 💧

## Quick Answers

- **What is this?** Seam Sealing Tape WBM FX-420 – Hot Melt - Waterproof PVC Coated Fabrics – Repair Tape - 20 Metres - Iron On (Clear (Transparent), 20mm Width) by wbm seam tapes
- **How much does it cost?** 169 Lei with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.ro](https://www.desertcart.ro/products/64045960-seam-sealing-tape-wbm-fx-420-hot-melt-waterproof-pvc)

## Best For

- wbm seam tapes enthusiasts

## Why This Product

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

## Key Features

- • **Generous 20m Roll:** Enough tape to tackle multiple projects, from tents to protective clothing, without running out.
- • **Flexible & Soft Finish:** Maintains fabric flexibility post-application, so your gear stays comfortable and functional.
- • **Effortless DIY Application:** Apply with any household iron—no special tools needed, perfect for quick repairs.
- • **Pro-Grade Hot Melt Adhesive:** Advanced TPU film with UV stabilization ensures long-lasting, non-yellowing performance.
- • **Seamless Waterproof Protection:** Create durable, water-resistant seals on PVC & PU fabrics effortlessly.

## Overview

The WBM FX-420 Seam Sealing Tape is a 20-meter, 20mm wide transparent hot melt tape designed for waterproofing sewn seams on PVC and PU coated fabrics. Featuring a UV-stabilized TPU film and a high-performance adhesive, it offers durable, flexible, and non-yellowing waterproof seals. Easy to apply with a household iron at medium heat, it’s ideal for repairing tents, covers, awnings, and waterproof clothing, combining professional-grade results with DIY convenience.

## Description

FX-420 hot melt Seam Sealing Tape 20mm width (150 micron thickness) is used to seal seams on PVC Coated Waterproof Fabrics - garments, covers, ground sheets, boat hoods, tarpaulins, tents etc. We have been successfully supplying our products to these markets for industrial production since 1985. The Tape gives excellent sealing results on a wide range of waterproof coated / laminated textiles. It consists of 2 layers – aliphatic TPU film (UV Stabilised - non yellowing properties) and a specially developed hot melt adhesive with excellent flow characteristics for ease of application and high performance (the adhesive is on the inner side of the tape as it is removed from the roll).Further technical information on our range of Seam Sealing Tape is available on our website at http://www.wbm-uk.com/tapes.htm Application Instructions: For small scale production, repairs and patching the tape is applied using a Heat Press or Household Iron. In this case the temperature needs to be set on a medium / medium hot setting - the dwell time is the important factor and this can only be determined by experimentation – suggest in the region of 5-7 seconds with pressure applied. Ideally apply the FX-420 Tape to a small piece of waste fabric first to test adhesion strength - after test application and allowing time for cooling pull the tape back and you should feel a resistance and normally the tape should remove some of the waterproof coating. A light weight release paper (greaseproof - non-stick side down) can be used between the heated surface and the tape to avoid damage to the tape / fabric and to prevent it sticking to the iron or press.

## Features

- 20 meter length of FX-420 (20mm width) Clear Hot Melt Seam Sealing Tape
- Waterproof / Water Resistant
- For Sealing Sewn Seams / Repairs on PVC & PU coated waterproof fabric – tents, covers, awnings, protective clothing, leisure waterproofs etc
- Remains soft and flexible after application with excellent performance and durability
- Easy to apply using domestic Iron (medium / medium hot setting) 135~150 C – see further instructions below.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Manufacturer | WBM Seam Tapes |
| Part number | FX-420-20-CLEAR |
| Item Weight | 85 g |
| Package Dimensions | 23 x 16 x 2.5 cm; 85 g |
| Item model number | FX-420-20-CLEAR |
| Size | 20mm Width |
| Colour | Clear (Transparent) |
| Material | Polyethylene (PE) |
| Item Package Quantity | 1 |
| Special Features | Transparent |
| Batteries included? | No |
| Batteries Required? | No |

## Product Details

- **Colour:** Clear (Transparent)
- **Brand:** WBM Seam Tapes
- **Item form:** Strip
- **Surface recommendation:** Coated Waterproof Fabrics (PU or PVC)
- **Water resistance level:** Waterproof

## Images

![Seam Sealing Tape WBM FX-420 – Hot Melt - Waterproof PVC Coated Fabrics – Repair Tape - 20 Metres - Iron On (Clear (Transparent), 20mm Width) - Image 1](https://m.media-amazon.com/images/I/81xZjRz3UML.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Waterproof seaming tape on ripstop
*by K***R on 14 September 2023*

Never used before. Used to make water proof coat with ripstop nylon. Used silicon paper between tape and my iron. Keep seams narrow or over lap a second strip of tape.Not really tried the coat yetI did enclosed french seams

### ⭐⭐⭐ Three Stars
*by A***R on 15 August 2016*

does the job but not easy to use

### ⭐⭐⭐⭐⭐ Perfect
*by A***0 on 10 July 2021*

I’ve bought this for when I sew a rain coat but have used it to repair a small tear in a gazebo. It was easy to use following the instructions and has worked perfectly.

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*Product available on Desertcart Romania*
*Store origin: RO*
*Last updated: 2026-03-11*