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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🔥♻️ Stay cool under pressure with the ultimate heat-blocking putty!

HEAT SHIELD MASTERY - Protects sensitive surfaces and valves from extreme heat damage during welding and brazing
NON TOXIC CONFIDENCE - Safe for professional use without harmful chemicals—work smart and safe
ECO SMART REUSABILITY - Use up to 40 times with simple re-moistening—cut waste, save money, stay efficient
MESS FREE APPLICATION - No sticky residue or cleanup hassle—just mold, apply, and remove cleanly
VERSATILE TORCH COMPATIBILITY - Perfect for MAP/PRO, oxy/acetylene, MIG, TIG, arc, and propane torches—one putty to rule them all

The Refrigeration Technologies RT400P Viper Wetrag Heat Blocking Putty is a reusable, non-toxic putty designed to protect pipes, valves, and sensitive components from direct and conductive heat during welding, brazing, or soldering. With up to 40 uses per jar and a no-mess formula that reactivates with water, it offers professional-grade heat protection compatible with a wide range of torches.

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Yes, all products are sourced directly from authorized retailers in the US, UK, UAE and India. We maintain strict quality control processes and verify each product before shipping. All items come with applicable manufacturer warranties and are covered by our standard return policy.

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Delivery times vary by destination country, typically ranging from 3-9 business days. Each order is fully trackable through our system. We handle all customs clearance and use reliable courier partners for last-mile delivery. You'll receive regular updates about your order status via email and our app.

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Desertcart is an international e-commerce platform operating since 2014. We securely process thousands of orders globally each day. Every product goes through our quality verification process before delivery, and we provide end-to-end order tracking, 24/7 customer support, and a comprehensive returns policy to ensure a safe shopping experience.

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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.

Bs.1758

Duties & taxes incl.

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Very reliable shop with genuine products. Will definitely buy again!

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Manufacturer	Refrigeration Technologies
Part number	REFRIGERATION TECHNOLOGOES - RT400P
Item Weight	45.4 g
Product Dimensions	0.25 x 0.25 x 0.25 cm; 45.36 g
Item model number	RT400P
Colour	Gray
Material	OTHER
Item Package Quantity	1
Number of Pieces	1
Special Features	Non Toxic
Specific uses	Repair, Welding
Batteries included?	No
Batteries Required?	No

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

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