---
product_id: 733772926
title: "RT400P Viper WetRag Heat Blocking Putty 11.8 fl oz (350 ml) Jar"
brand: "refrigeration technologies"
price: "€ 4.53"
currency: EUR
in_stock: false
url: https://www.desertcart.nl/products/733772926-rt400p-viper-wetrag-heat-blocking-putty-11-8-fl-oz
store_origin: NL
region: Netherlands
---

# Re-moisturize with water, no mess Blocks direct heat transfer Reusable up to 40 times RT400P Viper WetRag Heat Blocking Putty 11.8 fl oz (350 ml) Jar

**Brand:** refrigeration technologies
**Price:** € 4.53
**Availability:** ❌ Out of Stock

## Summary

> 🔥 Stay cool under pressure with RT400P Viper – the heat-blocking hero! 💧

## Quick Answers

- **What is this?** RT400P Viper WetRag Heat Blocking Putty 11.8 fl oz (350 ml) Jar by refrigeration technologies
- **How much does it cost?** € 4.53 with free shipping
- **Is it available?** Currently out of stock
- **Where can I buy it?** [www.desertcart.nl](https://www.desertcart.nl/products/733772926-rt400p-viper-wetrag-heat-blocking-putty-11-8-fl-oz)

## Best For

- refrigeration technologies enthusiasts

## Why This Product

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

## Key Features

- • **Easy Reactivation:** Simply add a few drops of water to restore putty’s cooling power
- • **Reusable Efficiency:** Up to 40 applications per jar—sustainable and cost-effective
- • **Ultimate Heat Shield:** Protects valves & sensitive surfaces from extreme heat damage
- • **Mess-Free Application:** No drips or residue, keeping your workspace clean
- • **Versatile Compatibility:** Works seamlessly with brazing, soldering, welding & all torch types

## Overview

The RT400P Viper WetRag Heat Blocking Putty is a reusable, mess-free thermal barrier designed to protect valves and sensitive components during brazing, soldering, or welding. It blocks direct heat conduction effectively, can be reactivated with water for up to 40 uses, and is compatible with all common torch types, making it an essential tool for professionals seeking reliable heat protection.

## Description

VIPER Wet Rag Heat Blocking and Blocking Heat; Putty is a reusable putty that wets piping and sensitive components and coolers Rag mid-brazed, soldered or welded. Mold Putty is just a front area and needs heat protection. Works with brazing, soldering, or welding. These heat up looks cool! Putty while deleting It looks like jar. RE-moisturize and dry in putty with a few drops of water. Easy instructions on how to use 40 applications until it is suitable New features. Reuseable surface, protect valve and other sensitive parts from heat damage directly conduct heat and transfer without mess. Use maps/Pro, oxy/acetylene, MiG, TIG, arc, and propane torches harmless

## Features

- Reusable
- Protects surfaces and valves
- Direct Conduction Heat and Transfer Block
- No mess

## Technical Specifications

| Specification | Value |
|---------------|-------|
| Brand | Refrigeration Technologies |
| Model Number | RT400P |
| Product Dimensions | 0.25 x 0.25 x 0.25 cm; 45.36 g |
| Quantity | 1 |
| Laser Class | Heat Resistant |
| Are Batteries Included | No |
| Item Weight | 45.4 g |

## Product Details

- **Brand:** Refrigeration Technologies
- **Item Form:** Putty
- **Special Feature:** Heat Resistant
- **Item Package Quantity:** 1
- **Item Volume:** 12 Fluid Ounces

## Images

![RT400P Viper WetRag Heat Blocking Putty 11.8 fl oz (350 ml) Jar - Image 1](https://m.media-amazon.com/images/I/61SVbN76qCL.jpg)

## Questions & Answers

**Q: How long does this last or how many times can it be exposed to high heat?**
A: As long as you put back in the jar and seal it. it lasts  a very long time its been a year and it still works. braze all the time never had a problem its been exposed to high heat for at least 15mins still kept protected area intact.

**Q: Does this leave residue or react with metal?**
A: No. Just clean off any residual COMPLETELY>

**Q: why is this is 20 dollars on ebay?**
A: Can't answer that, but the ease of Amazon returns is worth purchasing some products at a higher price from them.
I used this product to solder fittings near a TXV valve and it worked great.

**Q: Is it conductive? can it be used to shield parts on a pcb while using a heat gun?**
A: This is a paste type product.  It leaves residue.  Idk if its appropriate for a pcb.  We use it to protect vulnerable parts when arc welding or torch cutting.  It should be capable of protecting from a heat gun.

## Frequently Bought Together

- Refrigeration Technologies RT400P Viper Wetrag Heat Blocking Putty Jar (1), 12 oz.
- Matace 2 Pack 12x14 Inch Fireproof Welding Blanket & Pad, 5mm Thickened Fire Resistant Carbon Felt Cloth, Flame Retardant Fabric for Stove Wick, Heat Shield for Soldering, Firepit, Smoker, Black
- FLASLD Welding Blanket & Heat Shield Mat for Soldering Copper Pipe, 12''x12'' Flame Protector Pad Plumbing Hole Propane Torch (1 Pack)

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**Shop now:** [https://www.desertcart.nl/products/733772926-rt400p-viper-wetrag-heat-blocking-putty-11-8-fl-oz](https://www.desertcart.nl/products/733772926-rt400p-viper-wetrag-heat-blocking-putty-11-8-fl-oz)

---

*Product available on Desertcart Netherlands*
*Store origin: NL*
*Last updated: 2026-02-12*