How long does this last or how many times can it be exposed to high heat?

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.

Does this leave residue or react with metal?

No. Just clean off any residual COMPLETELY>

why is this is 20 dollars on ebay?

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.

Is it conductive? can it be used to shield parts on a pcb while using a heat gun?

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.

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RT400P Viper Wetrag Heat Blocking Putty Jar (1), 12 oz.

Product ID: 46259170

Details

Brand
Refrigeration
Color
Gray
Item Form
Putty
Special Feature
Heat Resistant
Specific Uses For Product
Repair Welding

💧No mess, water-activated formula

🔥Blocks direct & conductive heat

♻️Reusable up to 40 times

€ 69.23

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In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

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Description

🔥 Stay cool under pressure—heat blocking made effortless!

REUSABLE EFFICIENCY - Use it again and again—up to 40 times with simple re-moistening
MESS FREE APPLICATION - No drips or residue, just mold and protect with ease
TRUSTED HVAC ESSENTIAL - Highly rated by pros for keeping components cool during soldering
ULTIMATE HEAT SHIELDING - Protects valves & sensitive parts from extreme heat damage
VERSATILE TORCH COMPATIBILITY - Perfect for MAP/PRO, oxy/acetylene, MIG, TIG, arc & propane welding

The RT400P Viper Wetrag Heat Blocking Putty Jar is a 12 oz. reusable, high-viscosity putty designed to protect surfaces, valves, and sensitive components from direct and conductive heat during brazing, soldering, or welding. Compatible with multiple torch types, it offers a no-mess, water-activated formula that can be reused up to 40 times, making it an essential tool for HVAC professionals and welders seeking reliable heat resistance and surface protection.

Specifications

ASIN	B017T23T18
Brand Name	Refrigeration Technologies
Color	Gray
Compatible Material	Ceramic, Metal, Plastic
Container Type	Jar
Customer Reviews	4.6 4.6 out of 5 stars (643)
Global Trade Identification Number	00017857400082
Item Form	Putty
Item Package Quantity	1
Item Weight	1.6 ounces
Manufacturer	Refrigeration Technologies
Model	RT400P
Number of Pieces	1
Other Special Features of the Product	Heat Resistant
Part Number	REFRIGERATION TECHNOLOGOES - RT400P
Specific Uses For Product	Repair, Welding
UPC	696335182315 017857400082
Unit Count	12 Ounce
Viscosity Level	High
Volume	12 fluid ounces
Water Resistance Level	Water Resistant

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Our prices include the product cost, international shipping, import duties, customs clearance, and local delivery charges. We handle all customs and import procedures, ensuring there are no hidden fees upon delivery. PRO members receive additional benefits including free shipping.

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€ 69.23

Duties & taxes included

In stock

Sold byAmazon FranceDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

Buyer Protection · Full refund if your order doesn't arrive as described.

Desertcart purchases this item on your behalf and handles shipping, customs, and support to France.

Secure transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 weeks ago

Vikram D.

The MOLLE sheath is of exceptional quality. Very happy with my purchase.

2 weeks ago

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