Will this work to seal an internal crack in a central heating pipe? Needs to work underwater, at temperature of 80c, and around 3psi

I've used JB weld on a motorbike oil sump before it's get hotter than 80c, I found that your best to get it dry as possible put I on and then leave to set fully and it will work well as a temp fix but you will need to address the issue properly with it being a central heating system I would say it's better to replace the pipes and do it properly the first time round.

is it flexible IF used on fabrics?

I'm sorry but I really can't give you any kind of answer to that - we only used it as an epoxy weld for a cast iron sundial!! My initial reaction would be NO but that is only a guess.

can I use this to bond mild steel handle to glass oven door? Obviously it would need to be heatproof as oven heats to 250c.

If you are bonding metal to metal on the door I would be confident, but not sure by your question if you mean metal to glass ?I have used it very successfully to bond stainless steel saucepan lid handle back onto stainless steel lid, which has steam below, ie. 100cHave just read the card which states"It can withstand temperatures up to 550F when fully cured.A full cure is reached in 15-24 hours "It is an excellent product, so I would feel confident. Best wishes, CVN.

repair pin hole on cast iron radiator

As long as the radiator is drained and the pin hole is perfectly dry J-B weld should do the job.Bob T.

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

Fully operational. Shipping worldwide, on schedule.Customs & duties included in the price

Help Track order

Account Cart

J-B Weld Original Steel Reinforced Epoxy

Product ID: 47937042

Details

Brand
J-B Weld
Item form
Gel Liquid
Material
Epoxy Resin
Special feature
Steel High
Specific uses for product
Craft

⏳4-6 hours set time

🔥withstands up to 550°F

🛠️3960 PSI tensile strength

S$14

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered 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 SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Description

🛠️ Fix it once, fix it forever — the ultimate cold-weld epoxy for pros and DIYers alike!

VERSATILE BONDING - Bonds seamlessly to metal, wood, plastic, ceramic, and more—perfect for every fix and craft.
SHAPE SAND DRILL - Once cured, easily shape, file, or drill your repair for a professional finish every time.
FAST RELIABLE CURE - Set in just 4-6 hours and fully cures within 24 hours—get your projects moving faster.
HEAT WATER WARRIOR - Resistant to temperatures up to 550°F and fully waterproof for lasting repairs in any environment.
STEEL REINFORCED POWER - Experience unmatched durability with 3960 PSI tensile strength that holds strong under pressure.

JB Weld Original Cold-Weld 8265-SUK is a steel-reinforced epoxy that delivers a permanent, high-strength bond with a tensile strength of 3960 PSI. It sets in 4-6 hours and fully cures in 24 hours, withstanding temperatures up to 550°F. Waterproof and versatile, it adheres to metal, wood, plastic, and more, making it ideal for household, automotive, plumbing, marine, and craft repairs.

Specifications

ASIN	B0006O1ICE
Best Sellers Rank	448 in DIY & Tools ( See Top 100 in DIY & Tools ) 17 in Sealers
Brand	J-B Weld
Colour	Dark Grey
Compatible Material	Metal, Wood, Plastic, Polyvinyl Chloride, Concrete, Fiberglass, Ceramic, Aluminium, Wood, Brick, Cardboard
Container Type	Tube
Country Of Origin	United Kingdom
Customer Reviews	4.6 4.6 out of 5 stars (23,149)
Full Cure Time	24 Hours
Global Trade Identification Number	00043425826558
Included Components	Glue
Item Form	Gel, Liquid
Item Package Quantity	1
Item Type Name	8265-S JB Weld Auto Weld
Item Volume	2 Fluid Ounces
Item Weight	0.02 Pounds
Manufacturer	JB WELD
Manufacturer Part Number	8265S
Material	Epoxy Resin
Model Number	8265S
Number of Pieces	1
Other Special Features of the Product	Steel Reinforced, High Tensile Strength
Specific Uses For Product	Craft
Tensile Strength	5020 Pounds
UPC	043425700018 043425006554 434258265582 088022145435 718767917027 971473137824 700736731055 043425826558 088020712301 014444924532 635665203666
Unit Count	1.0 count
Viscosity Level	Low
Water Resistance Level	Waterproof

Common Questions

Are the products genuine and authentic?+

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.

How long does delivery take and is it reliable?+

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.

What is Desertcart? Is it safe to order from?+

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.

How is product pricing calculated?+

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.

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Fatima A.

Best international shipping I've ever tried. Worth every penny!

3 days ago

Abdullah B.

Great price for an authentic product. Fast international shipping too!

3 weeks ago

View all Trustpilot reviews

Shop Global, Save with Desertcart

Value for Money

Competitive prices on a vast range of products

Shop Globally

Serving millions of shoppers across more than 100 countries

Enhanced Protection

Trusted payment options loved by worldwide shoppers

Customer Assurance

Trusted payment options loved by worldwide shoppers.

Desertcart App

Shop on the go, anytime, anywhere.

S$14

Duties & taxes included

In stock

Sold byAmazon SINGAPOREDelivered 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 SINGAPORE.

Secure transaction

ProDesertcart PRO

Fast, free shipping, member pricing & priority support.

Join PRO →

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Ayesha M.

The product exactly matches the description. Very satisfied with my purchase.

5 days ago

Khalid Z.

Great experience from order to delivery. Highly recommended!

1 week ago

View all Trustpilot reviews