J-B Weld FiberWeld 2" x 36" Automoitve Repair Cast, Black (38237)

J-B Weld FiberWeld 2" x 36" Automoitve Repair Cast, Black (38237)

Q: Can this work on low pressure AC ?

I would not use a repair item on an AC line. Best to use new parts. Also may not be legal in your city/state because of the freon

Q: Will this product hold securely to wrap around a car muffler?

Not a chance. I haven't left a 1-star review, but this was horrible stuff. I'd previously ordered and applied another product which seemed to perform well: for a couple of weeks. And being an otherwise fan of J-B Weld products I gave this a go. It was both a PITA to use and lasted one drive. My muffler had a hole, though not from rust, but to sufficiently wrap this around a muffler and seal you need a good 4-5 kits (I wrapped 4). I ultimately had a weld patch done on the muffler—which I should have done from the start—but was sold on different DIY crap. This product may be fine for a pipe leak, but if you are looking to seal a muffler leak, don't. Cheaper to fix the muffler.

Q: Will this work Cast iron water pipe underneath a clamp?

do not know- probably by coating some fiberglass fabric wrapping it and then clamping. I would try it

4.2/5

Product ID: 349404954

Secure Transaction

Details

Brand
J-B Weld
Colour
Black
Material
Fiberglass
Number of Items
1
Recommended uses for product
Electrical

💧100 PSI water pressure hold

🔥400°F heat resistance

⏱️15 min steel-hard cure time

Frequently Bought Together

J-B Weld FiberWeld 2" x 36" Automoitve Repair Cast, Black (38237)

J-B Weld ExhaustWeld 2" x 72" Repair Wrap, White

J-B Weld MufflerSeal Muffler Cement Plastic Tube 12 oz., Model Number: 37912

Description

🛠️ Wrap it, fix it, forget it—your ultimate automotive lifesaver!

HEATPROOF HERO - Withstands extreme temperatures up to 400°F—perfect for engine bays and exhausts.
FINISH LIKE A PRO - Once cured, sand and paint to blend repairs seamlessly with your vehicle.
DIY CONFIDENCE KIT - Includes gloves and securing bandage—everything you need to fix it yourself, hassle-free.
WRAP ACTIVATE REPAIR - Soak in water for 5-7 seconds, then wrap for a quick 15-minute steel-hard fix.
PRESSURE PROOF PERFORMANCE - Holds water pressure up to 100 PSI, sealing leaks like a pro.

J-B Weld FiberWeld is a high-strength fiberglass repair wrap impregnated with a fast-curing resin that hardens like steel in 15 minutes. It resists temperatures up to 400°F and holds water pressure up to 100 PSI, making it ideal for automotive repairs such as hoses, exhausts, and emergency fixes. The kit includes gloves and a securing bandage, enabling quick, durable, and paintable repairs without professional help.

Specifications

Product Dimensions	3.81 x 12.55 x 19.99 cm; 82 g
Item model number	38237
Assembly Required	No
Batteries Required?	No
Material Type(s)	Fiberglass
Radio Control Suitability	Electrical, Plumbing, Outdoor, Indoor
Color	Black
Release date	21 September 2023
ASIN	B09BBGS7CN

Have a Question? See What Others Asked

Is this black when cured?

Can this work on low pressure AC ?

Will this product hold securely to wrap around a car muffler?

Will this work Cast iron water pipe underneath a clamp?

Common Questions

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Sneha T.

Received my product in pristine condition. Great service overall.

1 month ago

Neha S.

Excellent communication throughout the order process. Product is perfect.

2 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 over 300 million shoppers across more than 200 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$53

Duties & taxes incl.

SINGAPOREstore

Free Returns

30 daysfor PRO membership users

15 dayswithout membership

Secure Transaction

Trustpilot

TrustScore 4.5 | 7,300+ reviews

Vikram D.

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

2 weeks ago

Fatima A.

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

3 days ago

View all Trustpilot reviews