---
product_id: 1841042
title: "LTB-400 Liquid Electrical Tape, Easy-on, Waterproof, Indoor/Outdoor Use, 4 Oz. Jar, Black"
brand: "gardner bender"
price: "$28.01"
currency: USD
in_stock: true
reviews_count: 8
category: "Gardner Bender"
url: https://www.desertcart.us/products/1841042-ltb-400-liquid-electrical-tape-easy-on-waterproof-indoor-outdoor
store_origin: US
region: United States of America
---

# 2x dielectric protection (200 V/mil) Waterproof finish Weatherproof & flexible LTB-400 Liquid Electrical Tape, Easy-on, Waterproof, Indoor/Outdoor Use, 4 Oz. Jar, Black

**Brand:** gardner bender
**Price:** $28.01
**Availability:** ✅ In Stock

## Summary

> ⚡ Seal it. Shield it. Own the power of protection.

## Quick Answers

- **What is this?** LTB-400 Liquid Electrical Tape, Easy-on, Waterproof, Indoor/Outdoor Use, 4 Oz. Jar, Black by gardner bender
- **How much does it cost?** $28.01 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/1841042-ltb-400-liquid-electrical-tape-easy-on-waterproof-indoor-outdoor)

## Best For

- gardner bender enthusiasts

## Why This Product

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

## Key Features

- • **Flexible Rubber Formula:** Won't crack, peel, or harden—even in extreme weather conditions
- • **Ultimate Waterproof Seal:** Protects electrical splices from moisture and corrosion indoors & outdoors
- • **Easy Brush-On Application:** Smooth, quick-drying liquid formula for professional-grade repairs every time
- • **Double Dielectric Strength:** Offers 2x the insulation power for safer, longer-lasting connections
- • **Chemical & Saltwater Resistant:** Defends against harsh chemicals, solvents, and saltwater exposure

## Overview

Gardner Bender LTB-400 is a 4 oz. jar of black liquid electrical tape designed for indoor and outdoor use. Its rubber-based formula creates a waterproof, flexible, and chemical-resistant seal that insulates electrical splices with twice the dielectric strength (200 V/mil) compared to standard tapes. Ideal for home, automotive, marine, and security applications, it ensures durable protection without cracking or peeling, even in extreme weather.

## Description

Product Description 4 oz., black, liquid electrical tape, waterproof, indoor/outdoor use, rubber based coating will not harden, unravel or become brittle in extreme weather conditions, 2 times the dielectric protection on the market, 200 V/mil, 5-7 mils per coat, insulates cables, Electronics, outdoor lighting, underground wiring, alarms, security systems, utility trailers, packaged in a transparent plastic bottle. From the Manufacturer Great for home, auto, marine and electrical applications.

Review: A must-have for DIYers and professionals. 5 stars! - Excellent product! The Gardner Bender Liquid Electrical Tape is easy to apply and dries quickly, forming a durable, waterproof seal. Works great for indoor and outdoor electrical repairs. The black finish looks neat, and the 4 oz bottle lasts long. Highly reliable for insulation—no cracking or peeling. A must-have for DIYers and professionals. 5 stars!
Review: Excellent for Sealing and Protecting Electrical Connections! - The Gardner Bender Liquid Electrical Tape is a fantastic product for anyone needing a reliable way to seal and protect electrical connections. I’ve used this on a few of my outdoor electrical projects, and it works great for keeping moisture and dirt out. The application is super easy – it’s a liquid formula, so you just brush it on with the included applicator, and it forms a tough, waterproof seal once it dries.

## Features

- Produces a waterproof finish
- Ideal for indoor or outdoor use
- Insulates and protects electrical Splices and connections
- Seals and protects wire splice connections, this formula is resistant to chemicals, solvents, saltwater and other common fluids

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Gardner Bender |
| Color | Black |
| Material | Plastic |
| Number of Items | 1 |
| Recommended Uses For Product | Security |
| Special Feature | Transparent |

## Product Details

- **Brand:** Gardner Bender
- **Color:** Black
- **Material:** Plastic
- **Number of Items:** 1
- **Recommended Uses For Product:** Security

## Images

![LTB-400 Liquid Electrical Tape, Easy-on, Waterproof, Indoor/Outdoor Use, 4 Oz. Jar, Black - Image 1](https://m.media-amazon.com/images/I/71pasIUrnfL.jpg)

## Available Options

This product comes in different **Color, Style** options.

## Questions & Answers

**Q: Is this product on wires (that have not been compromised) where the outside plastic coating has been damaged, like a computer power cable?**
A: Would work well to repair wire coatings that have been compromised.  May require multiple applications to build up the desired thickness allowing dry time between applications.  Works great!

**Q: If I used a different brush than supplied to apply this, what would I use to clean off the brush?  Thank you for your time and assistance.**
A: I am not aware of anything that would clean the brush. This is not paint. I would get an inexpensive throw-away brush and be done with it.

**Q: Is this product UL listed?  Thanks.**
A: But here is info from the manufacture that says UL will not approve due to various applications - same as what CV says...   https://gardnerbenderfaq.wordpress.com/2014/05/30/is-liquid-tape-ul-approved/

**Q: I need to drill a hole in the back of my car to run a wire through, behind the license plate. Will this prevent the elements from getting inside the car?**
A: You want to use a cable grommet, if you buy one thats already has a hole make sure it just a little smaller than the wire/cable you are using so it gets a good seal. You can buy them that doesn't already have a hole, again make sure that when you put a hole in it that its a little smaller than the wire. Keep in mind you have a outer diameter that you will size correctly for the grommet to fit in, and an inner diameter for the size cable/ wire .

## Customer Reviews

### ⭐⭐⭐⭐⭐ A must-have for DIYers and professionals. 5 stars!
*by S***S on April 25, 2025*

Excellent product! The Gardner Bender Liquid Electrical Tape is easy to apply and dries quickly, forming a durable, waterproof seal. Works great for indoor and outdoor electrical repairs. The black finish looks neat, and the 4 oz bottle lasts long. Highly reliable for insulation—no cracking or peeling. A must-have for DIYers and professionals. 5 stars!

### ⭐⭐⭐⭐⭐ Excellent for Sealing and Protecting Electrical Connections!
*by J***R on April 27, 2025*

The Gardner Bender Liquid Electrical Tape is a fantastic product for anyone needing a reliable way to seal and protect electrical connections. I’ve used this on a few of my outdoor electrical projects, and it works great for keeping moisture and dirt out. The application is super easy – it’s a liquid formula, so you just brush it on with the included applicator, and it forms a tough, waterproof seal once it dries.

### ⭐⭐⭐⭐⭐ Best on the job insulation to use
*by D***N on September 30, 2025*

Great product to use instead of tape. This formula cures quicker than most other brands I have tried in the past. That makes it better to use on the job.

## Frequently Bought Together

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-16*