---
product_id: 38238102
title: "Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Black, 4 in x 5 ft, Pack of 1"
brand: "flex tape"
price: "R563"
currency: ZAR
in_stock: true
reviews_count: 13
category: "Flex Tape"
url: https://www.desertcart.co.za/products/38238102-original-thick-flexible-rubberized-waterproof-tape-seal-and-patch-leaks
store_origin: ZA
region: South Africa
---

# 100% waterproof, works underwater Withstands -40°F to 212°F temps Thick 39 mil rubberized backing Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Black, 4 in x 5 ft, Pack of 1

**Brand:** flex tape
**Price:** R563
**Availability:** ✅ In Stock

## Summary

> 🛠️ Flex Tape: The ultimate fix-it flex for every leak and crack!

## Quick Answers

- **What is this?** Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Black, 4 in x 5 ft, Pack of 1 by flex tape
- **How much does it cost?** R563 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.za](https://www.desertcart.co.za/products/38238102-original-thick-flexible-rubberized-waterproof-tape-seal-and-patch-leaks)

## Best For

- flex tape enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Grip:** Adheres to 20+ surfaces from metal to fabric, indoors or outdoors
- • **Seal Like a Pro:** Instantly blocks water, air & moisture with a flexible, watertight barrier
- • **Weather Warrior:** UV resistant and built to endure extreme heat and freezing cold
- • **Compact Powerhouse:** 4-inch by 5-foot roll packs massive sealing strength in a sleek, easy-to-store size
- • **Apply Anywhere, Anytime:** Works wet or dry, hot or cold—even underwater for emergency fixes

## Overview

Flex Tape is a thick, flexible rubberized waterproof tape designed to seal, patch, and repair leaks instantly. Its 39 mil backing conforms to diverse surfaces and withstands extreme temperatures from -40°F to 212°F. Waterproof and UV resistant, it works underwater and in harsh weather, making it the go-to tape for home, RV, plumbing, roofing, and pool repairs.

## Description

Buy Flex Tape, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Black, 4 in x 5 ft, Pack of 1: Pool & Deck Repair Products - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Impressive tape - Wow this stuff works. Used on a crack on my truck mirror outside plastic. Sealed great and is very sticky. Holding so far after many miles and a lot of rain
Review: Horse trough!! - Works well as long as surface is very clean. I sanded mine with a fine grade sand paper and it has worked very well on a plastic horse tank.

## Features

- FLEX TAPE is a super strong, rubberized, waterproof tape that can patch, bond, seal and repair virtually everything!
- FLEX TAPE is specially formulated with a thick, flexible, rubberized backing that conforms to any shape or object!
- FLEX TAPE can be applied hot or cold, wet or dry, even underwater!
- FLEX TAPE instantly seals out water, air and moisture to create a super strong, flexible, watertight barrier!
- FLEX TAPE is UV resistant, environmentally friendly, VOC-free and has a wide temperature range so it can be used in extreme weather conditions!

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B01N5Q3G8H |
| Adhesive Format | tape |
| Adhesive Location | one-sided |
| Adhesive Side Count | 1 |
| Best Sellers Rank | #708 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #12 in Masking Tape #55 in Adhesive Tapes #243 in Hardware |
| Brand | Flex Tape |
| Brand Name | Flex Tape |
| Color | Black |
| Compatible Material | Pvc, Acrylic, Metal, Steel, Copper, Aluminum, Wood, Ceramic, Porcelain, Tile, Glass, Rubber, Fiberglass, Stucco, Plaster, Stone, Cement, Concrete, Dry Wall, Epdm Roofs, Some Plastics, Fabrics, Vinyl and More. |
| Customer Reviews | 4.0 out of 5 stars 8,426 Reviews |
| Global Trade Identification Number | 00852808007053 |
| Included Components | Flex Tape Rubberized Waterproof Tape, 4 Inch x 5 Feet, Black |
| Item Dimensions L x W x Thickness | 4.13"L x 3.63"W x 3.63"Th |
| Item Resistance | waterproof |
| Item Thickness | 39 Mils |
| Item Type Name | TFSBLKR0405 |
| Item Weight | 0.12 Kilograms |
| Manufacturer | Swift Response, LLC |
| Material | Rubber |
| Material Type | Rubber |
| Model | TFSBLKR0405 |
| Number of Items | 1 |
| Other Special Features of the Product | Waterproof |
| Part Number | TFSBLKR0405 |
| Recommended Uses For Product | Outdoor |
| Size Name | 4" x 5' (Pack of 1) |
| Special Feature | Waterproof |
| Surface Recommendation | PVC, acrylic, metal, steel, copper, aluminum, wood, ceramic, porcelain, tile, glass, rubber, fiberglass, stucco, plaster, stone, cement, concrete, dry wall, EPDM roofs, some plastics, fabrics, vinyl and more. |
| UPC | 852808007053 |
| Unit Count | 1.0 Count |
| Upper Temperature Rating | 212 Degrees Fahrenheit |
| Warranty Description | Warranty |
| Water Resistance Level | Waterproof |

## Product Details

- **Brand:** Flex Tape
- **Color:** Black
- **Material:** Bamboo
- **Number of Items:** 1
- **Recommended Uses For Product:** Outdoor

## Images

![Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor - Home RV Roof Plumbing and Pool Repairs, Black, 4 in x 5 ft, Pack of 1 - Image 1](https://m.media-amazon.com/images/I/81kYTEf9vdL.jpg)

## Available Options

This product comes in different **Number Of Items** options.

## Questions & Answers

**Q: Can flex tape be remove, even after a long while**
A: Flex Tape bonds get stronger over time. However, many customers have had success removing Flex Tape with adhesive remover or a citrus degreaser.

**Q: Would the tape work to repair a tear in tbe seam of a  above ground pool liner?**
A: Many people have had great success repairing their pool liner with Flex Tape. For an even greater seal, be sure to apply it on the inside and outside of the pool.

**Q: What is the highest temperature it can handle?**
A: Flex Tape can be applied in temperatures From 20 degrees F up to 120 degrees F.  Flex Tape will function in extreme heat up to 200 degrees F.

**Q: can you prime and paint it?**
A: You can paint Flex Tape with our Flex Seal aerosol that comes in 12 colors.  We have done extensive testing and flex Seal aerosol is the only thing that adheres to The Flex Tape.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Impressive tape
*by S***F on May 24, 2026*

Wow this stuff works. Used on a crack on my truck mirror outside plastic. Sealed great and is very sticky. Holding so far after many miles and a lot of rain

### ⭐⭐⭐⭐⭐ Horse trough!!
*by J***. on June 13, 2026*

Works well as long as surface is very clean. I sanded mine with a fine grade sand paper and it has worked very well on a plastic horse tank.

### ⭐⭐⭐⭐ Great product but don’t believe what you see on tv
*by S***Y on September 2, 2025*

I purchased flex tape for a few different problems I had. The first was a leak in my water storage tank. The other was a crack in a pond. What I liked: ✅ Quality: very strong and sturdy material will definitely hold up over time. ✅ Seal: when used on a completely dry surface and smoothed out creates a water tight seal. Almost impossible to get off. What I didn’t like ❌ not as seen on tv: this product is shown to be able to apply on an active leak and still seal. You won’t get a perfect seal this way and have small leaks. Only apply to fully dry areas. Same goes for clean smooth surfaces. ❌ heat and weight weaken: if this is used where heat builds up and any sort of weight is applied at the same time it will loosen the adhesive. Overall I do like the product to patch things up but don’t use it like you see on tv. Fully clean and dry the area first. If applying to a surface with texture know that water can travel in the small crevices and still leak out.

## Frequently Bought Together

- Flex Tape, 4 in x 5 ft, Black, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor Projects - Home RV Roof Plumbing and Pool Repairs
- Flex Tape, 4 in x 5 ft, Gray, Original Thick Flexible Rubberized Waterproof Tape - Seal and Patch Leaks, Works Underwater, Indoor Outdoor Projects - Home RV Roof Plumbing and Pool Repairs

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*Product available on Desertcart South Africa*
*Store origin: ZA*
*Last updated: 2026-06-20*