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Product Summary

The J-B Weld FiberWeld™ Permanent Repair Cast is a high-strength, water-activated fiberglass wrap that delivers fast and durable repairs on a wide range of surfaces. Designed to harden like steel, this wrap sets in just 5–10 minutes and fully cures within 15–20 minutes to a tough black finish with a tensile strength of 1500 PSI. It bonds to metal, plastic/composite/PVC, wood, rubber, and fiberglass—even in wet conditions or underwater. Once cured, FiberWeld can be sanded and painted, making it ideal for both emergency fixes and permanent repairs on plumbing, automotive parts, tools, and outdoor equipment.

What's Included

    (1) (1) J-B Weld FiberWeld™ 2" x 36" fiberglass resin wrap, Protective gloves, Application instructions

Features + Benefits

  • Fast Setting: Sets in 5–10 minutes and cures completely in 15–20 minutes
  • Extreme Strength: Delivers a permanent bond rated up to 1500 PSI
  • Water-Activated: Cures quickly after submersion in water—no tools required
  • Works Underwater: Bonds effectively in wet environments and even underwater
  • Versatile Compatibility: Adheres to metal, PVC, wood, rubber, fiberglass, and more
  • Black Finish: Dries to a durable black coating that can be painted or sanded
  • Multipurpose Repairs: Perfect for exhaust systems, plumbing, marine repairs, tools, and more

Key Specs

AttributeSpecification

item#

7155347

Brand

JB Weld

Ship Weight

0.23 LB
AttributeSpecification

Product Weight

0.2300 lb

Dimensions L x W x H (in.)

7.87 x 4.94 x 1.5 in