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Black dual-chamber syringe with mixing tray and stick, 25 ml capacity

J-B Weld 50139 Plastic Bonder Body Repair Syringe Black 25 ml

SKU CH-EEPQ-6Q3Z5

Quick-setting two-part urethane adhesive repairs plastics, composites and coated metals, sets in 15 minutes and reaches 3770 PSI tensile strength

  • FeaturesStrong
  • Height3.5 L x 11 W x 21.9 H centimeters
  • Width3.5 L x 11 W x 21.9 H centimeters
  • Length3.5 L x 11 W x 21.9 H centimeters
  • Weight0.07 kilograms
  • Sets in 15 minutes for rapid repairs
  • 3770 PSI tensile strength delivers durable bonds
  • 1:1 mixing ratio simplifies application
  • Re-sealable syringe enables multiple uses
  • Works on plastics, composites, metals and concrete

Quick-setting urethane adhesive

J-B Weld 50139 Plastic Bonder is a two-part urethane adhesive supplied in a 25 ml syringe for automotive and household plastic repairs. The black formula bonds thermoset plastics, carbon fibre composites, thermoplastics, coated metals and concrete with a tensile strength of 3770 PSI.

15-minute set with 30-minute sanding window

Mixed at a 1:1 ratio, the adhesive sets in 15 minutes and can be sanded after 30 minutes, giving a hard, permanent bond that resists shock, vibration and thermal expansion. The resealable syringe includes a mixing tray and stick, allowing multiple uses from the single 25 ml pack.

Bonds plastics, composites and coated metals

Designed for thermoset, carbon fibre composite, thermoplastic, coated metal and concrete substrates where a structural black joint is required. Not suitable for polyethylene, polypropylene or PTFE surfaces, nor for load-bearing metal-to-metal joints that demand a dedicated structural epoxy.

Highlights

  • Sets in 15 minutes for rapid repairs
  • 3770 PSI tensile strength delivers durable bonds
  • 1:1 mixing ratio simplifies application
  • Re-sealable syringe enables multiple uses
  • Works on plastics, composites, metals and concrete

Specifications

BrandJ-B Weld, JBWeld
FeaturesStrong
Height3.5 L x 11 W x 21.9 H centimeters
Width3.5 L x 11 W x 21.9 H centimeters
Length3.5 L x 11 W x 21.9 H centimeters
Weight0.07 kilograms

Questions about this item

Will the 1:1 mix ratio work on the coated metal brackets I'm keeping from the old bumper?

Yes, the urethane adhesive bonds to coated metals as well as thermoplastics and carbon-fibre composites.

How can I verify the 3770 PSI bond has cured properly after the 15-minute set?

The adhesive turns black and hard; after 30 minutes it can be sanded, confirming a full cure.

Does the 25 ml syringe include the mixing tray and stick, or must I buy them separately?

The package supplies a mixing tray and stick, and the re-sealable syringe lets you store unused adhesive.

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