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Frequently Asked Questions: General

Where can I see your full product catalog?

You can download our product catalog here.

What is the difference between Twin Tubes, Syringes, Putty Sticks, SuperGlues, Repair Wraps, and Pastes??

J-B Weld products in twin tubes, syringes, and putty sticks all consist of two-component epoxies, consisting of a resin and a hardener, that - when combined - harden to bond on most surfaces. The primary difference is in the dispensing method:

  • Twin Tubes: The original! Resins and hardeners are in two separate tubes that you dispense in equal parts onto a surface for mixing and application using a wooden stick or other method.
  • Syringes: Resins and hardeners are in two separate containers within one syringe unit; pressing the plunger will dispense the resin and hardener in equal parts onto a surface for mixing and application. You can also attach a single-use static mixer that will mix equal portions upon dispensing, and apply directly to the surface.
  • Putty Sticks: Our epoxy putty sticks contain an outer and inner layer that, when mixed by (gloved) hand, become a moldable, shapable solution that can seal cracks and repair holes.
  • SuperGlues: Our SuperWeld line offers innovative high-strength super glues. They're easy to use, set quickly and are ideal for instant bonding on crafts, home and auto repairs and more.
  • Repair Wraps: FiberWeld repair casts combine high-strength fiberglass wraps with adhesive for quick-curing repairs or structural reinforcement. They're easy to apply; just dip in water, wrap around the damaged area and secure with the supplied bandage to cure. After curing, the wraps can be sanded and painted.
  • Repair Pastes: Exhaust Repair pastes and adhesives are designed to seal and structurally repair almost any part of your vehicle's exhaust system. These products are specially formulated to withstand extremely high temperatures.

Is J-B Weld food-safe?

When fully cured, J-B Weld is non-toxic. Our products are not rated food-safe, and we do not recommend consuming the product or using it on areas that directly touch food or beverage.

Will J-B Weld conduct electricity?

No. J-B Weld is not considered to be a conductor. It is an insulator.

How can I remove J-B Weld products from hands/skin or surfaces?

Acetone or acetone-based products will remove most J-B Weld from hands and most surfaces. In some instances, a light to moderate abrasive might be required.

When fully cured, some J-B Weld products can only be removed by grinding or filing it off, or by directly heating the product above the 600º maximum temperature threshold.

What can I use as a surface cleaner before using J-B Weld? How else should I prepare surfaces?

We recommend roughing up surfaces using a light sandpaper or other abrasive cloth prior to application to ensure sufficient bond. To clean, we recommend using acetone or lacquer thinner. In the absence of these two, soap and water can be used. Just be sure that the surface is completely dry before applying J-B Weld. DO NOT use alcohol or any "cleaner" that will leave a petroleum residue.

Is there anything that J-B Weld WON’T bond to?

Broadly speaking, most J-B Weld products will not adhere or bond well to:

  • Any flexible rubber surface
  • Canvas
  • Polypropylene plastic
  • Polyethylene plastic
  • Leather or Vinyl (use our LeatherWeld kit for these repairs)

Can I thin J-B Weld epoxies to make it easier to pour?

Yes. Add up to one teaspoon of acetone or lacquer thinner per two ounces (one full package) of mixed product.

Frequently Asked Questions: What Do I Use For ... ?

What products can I use for automotive repair?

We've got pretty much anything you need to keep your car up and running, from bumper to bumper. Watch our video here and check out the products below.

  • J-B Weld Original Twin Tubes: for repairs on metal and plastic
  • SteelStik Putty Stick: for repairs on metal
  • HighHeat Syringe and Putty Stick: for repairs on high temperature surfaces
  • PlasticBonder Syringe: for bumpers and plastic repair
  • ExhaustWeld Wrap: for repairs on exhaust systems
  • ExtremeHeat Paste: filling and fixing iron and steel
  • MufflerSeal Paste: sealing around mufflers and exhaust systems

What can I use for repairs to my car's exhaust system?

J-B Weld Exhaust Repair pastes and adhesives are designed to seal and structurally repair almost any part of your vehicle's exhaust system. These products are specially formulated to withstand extremely high temperatures. Watch our video here and check out the products below.

  • MufflerSeal Paste: sealing around mufflers and exhaust systems
  • ExtremeHeat Paste: filling and fixing iron and steel
  • ExhaustWeld Wrap: for repairs on exhaust systems
  • Tiger Patch: repairs tailpipes and mufflers

What can I use for plumbing repairs?

J-B Weld has a wide selection of products for nearly any plumbing repair, helping you prevent leaks and drips - whether it's a pinhole in a copper pipe, a leaky pool, or a cracked piece of PVC. Watch our video here and check out the products listed below.

  • WaterWeld Putty Stick: for repairs on plastic and rubber, including under water
  • SteelStik Putty Stick: for repairs on metal pipes and surfaces
  • MarineWeld Twin Tubes and Syringe: for repairs on multiple surfaces exposed to water
  • FiberWeld Repair Wraps: fiberglass wraps for pipes of all kinds - copper, PVC, cast iron, rubber, and steel

What do you have for wood repair and restoration?

J-B Weld's line of Wood Restore products are a complete solution for wood repair, restoration and other projects. Watch our video here and check out the products below.

  • KwikWood Putty Stick: for insect damage, rot, or furniture/molding repairs
  • WoodWeld: no-foam adhesive for bonding and repairing interior or exterior wood
  • Liquid Hardener: seals and reinforces decayed or rotted wood
  • Wood Restore Repair Putty: fill holes, cracks, and damage or prepare for painting
  • Wood Restore Premium Epoxy Putty: structural repair and filling of damaged or rotted wood

Frequently Asked Questions: J-B Weld Twin Tube Epoxies

What are J-B Weld Twin Tube epoxies?

Our Twin Tubes are what started it all. These two-part epoxies are some of our most versatile products. With a paste-like consistency, Twin Tubes are great at filling gaps and cracks. And once cured, they create a permanent bond and can be sanded, drilled, tapped, shaped and painted.

Twin Tube epoxies are available in Original, KwikWeld, MarineWeld, and ClearWeld.

What should I use for various surfaces?

Our products can be used on most surfaces.

  • Original
    • Metals: all, including aluminum and cast iron
    • Plastics: most rigid plastics (PVC, CPVC); not ideal for flexible plastics, polypropylene, and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • KwikWeld
    • Metals: all; not as strong on aluminum
    • Plastics: most rigid plastics (PVC, CPVC); not ideal for flexible plastics, polypropylene, and polyethylene
    • Other: Wood, Concrete, Tile, Ceramic, Fiberglass
  • MarineWeld
    • Metals: all, including aluminum and cast iron
    • Plastics: most rigid plastics (PVC, CPVC); not ideal for flexible plastics, polypropylene, and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • ClearWeld
    • Metals: All, including aluminum
    • Plastics: more flexible than epoxy pastes, recommended for most plastics except polypropylene and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass

How long do your products take to dry? What color do they cure?

The set and cure times can be impacted by environmental conditions, such as temperature and humidity.

  • Original: sets in 4-6 hours, cures in 16-24 hours - dark grey
  • KwikWeld: sets in 6 minutes, cures in 4-6 hours - dark grey
  • MarineWeld: sets in 4-6 hours, cures in 16-24 hours - dark grey
  • ClearWeld: sets in 5 minutes, cures in 1 hour - clear

What is the strength of Twin Tubes?

When fully cured, our Twin Tubes offer impressive strength ratings.

  • Original: 5020 PSI
  • KwikWeld: 3127 PSI
  • MarineWeld: 5020 PSI
  • ClearWeld: 3900 PSI

Do J-B Weld Twin Tubes offer resistance to heat or cold?

All of our products offer some level of heat resistance.

  • Original: 550ºF / 288ºC
  • KwikWeld: 250ºF / 120ºC
  • MarineWeld: 550ºF / 288ºC
  • ClearWeld: 250ºF / 120ºC

Original J-B Weld has proven to maintain its characteristics to temperatures as low as -67ºF / -55ºC.

Are J-B Weld Twin Tubes resistant to water, chemicals, and fuel?

The resistance to substances including water, chemicals, and fuel differs by product.

  • Original: resistant to water, chemicals, and fuel
  • KwikWeld: offers some resistance to water, chemical, and fuel
  • MarineWeld: resistant to water, chemicals, and fuel
  • ClearWeld: offers some resistance to water and chemicals; not fuel-resistant

What is the shelf life of J-B Weld Twin Tubes products?

All of our products offer a shelf life of 3 years. In most cases, as long as they're stored in a cool, dark area, away from extreme conditions, and they don't mix, Twin Tubes products may last even longer.

Frequently Asked Questions: J-B Weld Syringes

What are J-B Weld Syringe epoxies?

J-B Weld Syringes deliver high-strength bonding in an easy-to-use applicator that dispenses the two-part adhesive in a precise 1-to-1 ratio. For convenient mixing, each product comes with a tray and stick. No other tools are necessary. Syringes are ideal for bonding and gap-filling. After curing, they can be sanded and painted.

Syringe epoxies are available in Original, KwikWeld, MarineWeld, ClearWeld, MinuteWeld, PlasticWeld, PlasticBonder, WoodWeld, and HighHeat.

What should I use for various surfaces?

Our products can be used on most surfaces.

  • Original: for the strongest bond
    • Metals: all, including aluminum and cast iron
    • Plastics: most rigid plastics (PVC, CPVC); not recommended for flexible plastics, polypropylene, and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • KwikWeld: for a fast-setting bond
    • Metals: all; not as strong on aluminum
    • Plastics: most rigid plastics (PVC, CPVC); not recommended for flexible plastics, polypropylene, and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • MarineWeld: for a strong bond, ideal for repairs around water
    • Metals: all, including aluminum and cast iron
    • Plastics: most rigid plastics (PVC, CPVC); not recommended for flexible plastics, polypropylene, and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • ClearWeld: for a clear bond
    • Metals: all, including aluminum
    • Plastics: more flexible than epoxy pastes, recommended for most plastics except polypropylene and polyethylene
    • Other: glass, wood, concrete, tile, ceramic, fiberglass
  • MinuteWeld: for a clear, fast-setting bond
    • Metals: most metals
    • Plastics: more flexible than epoxy pastes, recommended for most plastics except polypropylene and polyethylene
    • Other: concrete, tile, ceramic, fiberglass
  • PlasticWeld: for a quick-setting bond, ideal for rigid plastics
    • Metals: all, including aluminum
    • Plastics: more flexible than epoxy pastes, recommended for most plastics except polypropylene and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • PlasticBonder: for a strong bond or gap filler, ideal for most plastics
    • Metals: all, including aluminum
    • Plastics: virtually all plastics; for polypropylene and polyurethane we can guarantee cosmetic but not structural repairs. Works on nylon.
    • Other: concrete, tile, ceramic, fiberglass
  • WoodWeld: for bonding and repairing exterior or interior wood; doesn't foam
    • Metals: all, including aluminum
    • Plastics: virtually all plastics; our best solution on polypropylene and polyurethane
    • Other: wood, concrete, tile, ceramic, fiberglass
  • HighHeat: for high-temperature repairs
    • Metals: all, including aluminum
    • Plastics: most rigid plastics
    • Other: concrete, tile, ceramic, fiberglass

How long do your products take to dry? What color do they cure?

The set and cure times can be impacted by environmental conditions, such as temperature and humidity.

  • Original: sets in 4-6 hours, cures in 16-24 hours - dark grey
  • KwikWeld: sets in 6 minutes, cures in 4-6 hours - dark grey
  • MarineWeld: sets in 4-6 hours, cures in 16-24 hours - white
  • ClearWeld: sets in 5 minutes, cures in 1 hour - clear
  • MinuteWeld: sets in 1 minute, cures in 1 hour - clear
  • PlasticWeld: sets in 5 minutes, cures in 1 hour - clear
  • PlasticBonder: sets in 15 minutes, cures in 30 minutes - tan or black (depending on the product)
  • WoodWeld: sets in 15 minutes, cures in 30 minutes - tan
  • HighHeat: sets in 1 hour, cures in 24 hours at room temp (1 hour at 250ºF) - dark grey

What is the strength of Syringe products?

When fully cured, our Syringe products offer impressive strength ratings.

  • Original: 5020 PSI
  • KwikWeld: 3127 PSI
  • MarineWeld: 2350 PSI
  • ClearWeld: 3900 PSI
  • MinuteWeld: 2300 PSI
  • PlasticWeld: 3900 PSI
  • PlasticBonder: 3770 PSI
  • WoodWeld: 3770 PSI
  • HighHeat: 4730 PSI

Do J-B Weld Syringes offer heat resistance?

All of our products offer some level of heat resistance.

  • Original: 300ºF / 150ºC
  • KwikWeld: 250ºF / 120ºC
  • MarineWeld: 300ºF / 150ºC
  • ClearWeld: 250ºF / 120ºC
  • MinuteWeld: 250ºF / 120ºC
  • PlasticWeld: 250ºF / 120ºC
  • PlasticBonder: 250ºF / 120ºC
  • WoodWeld: 250ºF / 120ºC
  • HighHeat: 550ºF / 290ºF

Are J-B Weld Syringes resistant to water, chemicals, and fuel?

The resistance to substances including water, chemicals, and fuel differs by product.

  • Original: resistant to water, fuel, and chemicals
  • KwikWeld: resistant to water, fuel, and chemicals
  • MarineWeld: resistant to water, fuel, and chemicals
  • ClearWeld: some water resistance, not ideal for fuel and chemicals
  • MinuteWeld: limited resistance to water, not ideal for fuel and chemicals
  • PlasticWeld: limited resistance to water, not ideal for fuel and chemicals
  • PlasticBonder: limited resistance to water, not ideal for fuel and chemicals
  • WoodWeld: limited resistance to water, not ideal for fuel and chemicals
  • HighHeat: resistance to fuel, limited resistance to water and chemicals

What is the shelf life of J-B Weld Syringe products?

All of our products offer a shelf life of 3 years. In most cases, as long as they're stored in a cool, dark area, away from extreme conditions, syringe products may last even longer. Note the static mixer attachment is a one-time use product.

Frequently Asked Questions: J-B Weld Epoxy Putty Sticks

What are J-B Weld Epoxy Putty Sticks?

J-B Weld Putty Sticks put a lot of strength and versatility right in your hands. Simply mix the putty by hand until the two components are a uniform color. Then mold, shape or fill the putty into a crack, gap or hole. Once cured, the putty can be sanded, drilled, tapped and painted.

Putty sticks are available in SteelStik, WaterWeld, KwikWood, PlasticWeld, HighHeat, and TankWeld.

What should I use for various surfaces?

Our products can be used on most surfaces.

  • SteelStik: fills, seals, and repairs steel and other metal surfaces
    • Metals: all, including aluminum and cast iron
    • Plastics: most rigid plastics (PVC, CPVC); not recommended for flexible plastics, polypropylene, and polyethylene
    • Other: concrete, tile, ceramic, fiberglass
  • WaterWeld: seals and repairs pipes and surfaces exposed to water
    • Metals: most; not as strong on aluminum
    • Plastics: most rigid plastics (PVC, CPVC); not recommended for flexible plastics, polypropylene, and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • KwikWood: repairs, seals, and fills wood
    • Metals: not recommended
    • Plastics: not recommended
    • Other: wood
  • PlasticWeld: fills, seals, and provides structural repair on most plastics, including auto bumpers
    • Metals: all, including aluminum
    • Plastics: recommended for most plastics, including PVC - not recommended for polypropylene and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass
  • HighHeat: fills and seals on high-temperature surfaces
    • Metals: all, including aluminum
    • Plastics: rigid plastics
    • Other: concrete, tile, ceramic, fiberglass
  • TankWeld: seals and repairs metal tanks
    • Metals: all, including aluminum
    • Plastics: more flexible than epoxy pastes, recommended for most plastics except polypropylene and polyethylene
    • Other: wood, concrete, tile, ceramic, fiberglass

How long do your products take to dry? What color do they cure?

The set and cure times can be impacted by environmental conditions, such as temperature and humidity.

  • SteelStik: sets in 5 minutes, cures in 1 hour - grey
  • WaterWeld: sets in 25 minutes, cures in 1 hour - white
  • KwikWood: sets in 15-25 minutes, cures in 1 hour - tan
  • PlasticWeld: sets in 25 minutes, cures in 3 hours - white
  • HighHeat: sets in 1 hour, cures in 8 hours - grey
  • TankWeld: sets in 5 minutes, cures in 1 hour - grey

What is the strength of Putty Sticks?

When fully cured, our Putty Sticks offer impressive strength ratings.

  • SteelStik: 4000 PSI
  • WaterWeld: 4730 PSI
  • KwikWood: 2450 PSI
  • PlasticWeld: 700 PSI
  • HighHeat: 4000 PSI
  • TankWeld: 4000 PSI

Do J-B Weld Putty Sticks offer heat resistance?

All of our products offer some level of heat resistance.

  • SteelStik: 350ºF / 180ºC
  • WaterWeld: 250ºF / 120ºC
  • KwikWood: 350ºF / 180ºC
  • PlasticWeld: 200ºF / 93ºC
  • HighHeat: 650ºF / 340ºC
  • TankWeld: 300ºF / 150ºC

Are J-B Weld Putty Sticks resistant to water, chemicals, and fuel?

The resistance to substances including water, chemicals, and fuel differs by product.

  • SteelStik: resistant to water, fuel, and chemicals
  • WaterWeld: resistant to water, fuel, and chemicals
  • KwikWood: limited water resistance, not resistant to fuel and chemicals
  • PlasticWeld: limited water resistance, resistant to fuel and chemicals
  • HighHeat: limited water resistance, resistant to fuel and chemicals
  • TankWeld: resistant to water, fuel, and chemicals

What is the shelf life of J-B Weld Putty Stick products?

All of our products offer a shelf life of 3 years. In most cases, as long as they're stored in a cool, dark area, away from extreme conditions, syringe products may last even longer. Note the static mixer attachment is a one-time use product.

Frequently Asked Questions: J-B Weld SuperWeld Super Glues

What are J-B Weld SuperWeld super glues?

J-B Weld's SuperWeld line offers innovative high-strength super glues. They're easy to use, set quickly and are ideal for instant bonding on crafts, home and auto repairs and more.

SuperWeld products include SuperWeld, SuperWeld Professional Grade, SuperWeld Brush On, SuperWeld Extreme, and SuperWeld Light Activated Instant Glue.

What's the difference between your SuperWeld super glues?

  • SuperWeld: 2-pack super glue tubes
  • SuperWeld Professional Grade: strongest super glue
  • SuperWeld Brush-On: brush included for no-mess, controlled applications
  • SuperWeld Extreme: flexible, impact-resistant bond in a no-drip gel
  • SuperWeld Light Activated Instant Glue: cures instantly under included UV light

What surfaces can I use SuperWeld on?

Our SuperWeld super glues are ideal for crafting, DIY repairs, and fixes on a variety of surfaces, including:

  • Rubber
  • Stone
  • Wood
  • Glass
  • Rigid Plastics
  • Ceramic
  • .. and more

How long do your products take to dry? What color do they cure?

The set and cure times can be impacted by environmental conditions, such as temperature and humidity.

  • SuperWeld: sets in 25 minutes, cures in 24 hours - clear
  • SuperWeld Professional Grade: sets in 10 seconds, cures in 24 hrs - clear
  • SuperWeld Brush-On: sets in 10 seconds, cures in 24 hrs - clear
  • SuperWeld Extreme: sets in 30 seconds, cures in 24 hours - clear
  • SuperWeld Light Activated Instant Glue: sets and cures instantly under included light

What is the strength of SuperWeld super glues?

When fully cured, our Putty Sticks offer impressive strength ratings.

  • SuperWeld: 700 PSI
  • SuperWeld Professional Grade: 3500 PSI
  • SuperWeld Brush-On: 3100 PSI
  • SuperWeld Extreme: 3000 PSI
  • SuperWeld Light Activated Instant Glue: 2800 PSI

What is the shelf life of J-B Weld SuperWeld super glues?

All of our products offer a shelf life of around 1-1.5 years.