---
product_id: 274682578
title: "Large 16oz (Black)"
brand: "flex seal liquid"
price: "33.47 OMR"
currency: OMR
in_stock: true
reviews_count: 5
category: "Flex Seal Liquid"
url: https://www.desertcart.com.om/products/274682578-large-16oz-black
store_origin: OM
region: Oman
---

# Waterproof & weatherproof Multi-application brush/roll/dip 16oz large coverage Large 16oz (Black)

**Brand:** flex seal liquid
**Price:** 33.47 OMR
**Availability:** ✅ In Stock

## Summary

> 🛠️ Seal it, shield it, and never stress it!

## Quick Answers

- **What is this?** Large 16oz (Black) by flex seal liquid
- **How much does it cost?** 33.47 OMR with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.om](https://www.desertcart.com.om/products/274682578-large-16oz-black)

## Best For

- flex seal liquid enthusiasts

## Why This Product

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

## Key Features

- • **Versatile Application Methods:** Brush, roll, dip, or pour for any project size or shape
- • **Easy DIY Fix for Every Surface:** Perfect for automotive, home repairs, and creative projects
- • **Weatherproof Barrier That Lasts:** Resists rain, snow, UV, extreme temps & natural wear
- • **Flexible & Durable Rubberized Seal:** Creates a breathable, non-slip, crack-resistant coating
- • **Maximize Protection with 16oz Coverage:** Covers approx. 20 sq. ft. for extensive sealing power

## Overview

Flex Seal Liquid Large 16oz is a thick, black rubberized coating that dries to a flexible, watertight seal. Designed for versatile application—brush, roll, dip, or pour—it covers approximately 20 sq. ft. per can. This weatherproof barrier resists moisture, UV rays, extreme temperatures, and natural wear, making it ideal for automotive, home, and outdoor repairs. Durable and breathable, it seals cracks and holes with a non-slip finish, ensuring long-lasting protection.

## Description

FLEX SEAL LIQUID is a patent pending, proprietary formulation that starts out as a thick liquid and dries to a super strong, flexible, watertight rubberized coating. FLEX SEAL LIQUID can be brushed, rolled, dipped or poured to create a high performance protective rubber barrier that blocks out air, water and moisture on a variety of surfaces and objects. Once cured, FLEX SEAL LIQUID forms a durable, breathable, weatherproof, non slip barrier that's resistant to rain, snow, sun, wind, hail, air, moisture, UV degradation, extreme temperatures and natural weathering. DIRECTIONS: Stir can well, do not shake. Make sure the surface is clean, dry and doesn't have grease, oil and dirt on it. For better adhesion, scuff surface with sand paper or steel wool. Coverage will vary depending on amounts of coats used. 1 Large 16 ounce - approx. 20Sq. Ft., 1 Jumbo 32 ounce - approx. 40Sq. Ft., 1 Gallon can - approx. 150Sq. Ft., Brush or roll FLEX SEAL LIQUID using an even sweeping motion. Apply several even coats until the surface has been completely covered and ALL cracks and holes have been filled. Allow FLEX SEAL LIQUID to dry 24 to 48 hours and apply additional coats as needed. Always brush or roll over a larger area than just where the leak occurred. Dip object directly into the FLEX SEAL LIQUID make a slight swirling motion. Once the surface has been coated, remove and let any excess drip back into the can. Hang or clip the object in the same vertical position as it came out of the can and let dry. Pour FLEX SEAL LIQUID directly on the surface allowing gravity to take FLEX SEAL LIQUID into cracks, holes and hard to reach areas. Continue to pour until the surface has been covered and all cracks and holes have been completely filled.

Review: Not cheap but fixed hot tub liner brilliant stuff will definitely buy again and easy to use
Review: Love this stuff! Was able to use it to help seal various different parts on my 69 Dodge Dart Project. Has a nice glossy texture and dries pretty quickly. Helps protect my components in my car and keeps them from cracking. It is a good texture for most any projects. I have used it on other applications too. It's nice that it's a versatile project that I can use for almost anything!

## Features

- Size: Large
- Quantity: 16 Ounce
- Colour: Black
- Flex Seal Liquid

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B019PFO4KM |
| Best Sellers Rank | #42,347 in Automotive ( See Top 100 in Automotive ) #163 in Automotive Fillers, Adhesives & Sealants |
| Item model number | LFSBLKR16 |
| Manufacturer | Flex Seal Liquid |
| Product Dimensions | 10.16 x 8.64 x 8.64 cm; 453.59 g |

## Product Details

- **Brand:** Flex Seal Liquid
- **Item dimensions L x W x H:** 10.2 x 8.6 x 8.6 centimeters
- **Item weight:** 454 g
- **Material:** Rubber
- **Style:** Industrial

## Images

![Large 16oz (Black) - Image 1](https://m.media-amazon.com/images/I/81UvT2V36QL.jpg)

## Questions & Answers

**Q: Could I dip wooden chair legs in this to prevent them from scratching a wood floor?**
A: Yes, you can dip wooden chair legs but as you use the chairs the bottom will wear off. If they were my chairs I would use felt pads that you can find in any hardware store.

**Q: Would a metal surface become insulated electrically after this was applied? Thinking of a tight car battery compartment...**
A: Not enough to protect the battery from eventually shorting out. I would recommend securing a thick piece of rubber between the battery terminal and the metal close to it.

**Q: How long dose this take to dry**
A: It takes at least 24-48 hours for Flex Seal Liquid to dry based on the thickness of your application.

**Q: My child has a basketball post with a plastic base that holds water.  The base has a leak. Is this product suggested? If so, any prep suggested?**
A: Anything works better with a little prep., sandpaper and clean.  It should do well.  Also as a add the new tape would probably work better.

## Customer Reviews

### ⭐⭐⭐⭐⭐ Review
*by G***N on 25 June 2017*

Not cheap but fixed hot tub liner brilliant stuff will definitely buy again and easy to use

### ⭐⭐⭐⭐⭐ Review
*by T***G on 21 October 2025*

Love this stuff! Was able to use it to help seal various different parts on my 69 Dodge Dart Project. Has a nice glossy texture and dries pretty quickly. Helps protect my components in my car and keeps them from cracking. It is a good texture for most any projects. I have used it on other applications too. It's nice that it's a versatile project that I can use for almost anything!

### ⭐ Review
*by M***N on 23 July 2020*

Received a crumbled can

## Frequently Bought Together

- Flex Seal Liquid, 16 oz, Black, Liquid Rubber Coating Sealant, Waterproof, Flexible, Breathable, and UV Resistant, Roof Repair, Basements, RV, Campers, Trailers, Marine, EPDM, Masonry
- Flex Seal 2-Pack Black 17oz Stop Leaks Instantly, Waterproof Sealant Coating For Gutters, RV, Roof, Skylights, Windows

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**Shop now:** [https://www.desertcart.com.om/products/274682578-large-16oz-black](https://www.desertcart.com.om/products/274682578-large-16oz-black)

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*Product available on Desertcart Oman*
*Store origin: OM*
*Last updated: 2026-02-08*