Black Medium-Thick CA Glue, KBL-500

Product form

  • ($7.75/ounce)
  • ($4.46/ounce)

Price: $15.50

  • PREMIUM CYANOACRYLATE SUPER GLUE - LAB TESTED FOR OPTIMAL PERFORMANCE: High performance industrial grade adhesive. Black Medium-Thick CA is used to bond parts, with focus on impact and shock absorbance qualities.
    2 ounce includes: (2) applicator caps, (1) clog-free stopper, and a bag of micro-tips for precision.
    16 ounce includes: (1) Easy dispensing yorker spout, (4) empty 2 ounce bottles, (6) applicator caps, (2) clog-free stopper, and a bag of micro-tips for precision.
  • STRONG "BONDING AND FILLING" ADHESIVE: ideal for spalted wood and burl, hiding imperfections, filling dark voids, and accenting specific areas in your projects.
  • PROPERTIES: Viscosity: 500 cPs (meaning the thickness of the liquid is similar to that of syrup). Penetrating abilities of up to 0.008" in size. Bonding time: 40-60 seconds.
  • SUPERIOR SHELF LIFE: When well kept, our product can last several years in a cold environment. Just make sure to store the bottle under 40°F before AND after use to QUALIFY FOR OUR 20 month shelf life warranty. If product does not last, we will replace that bottle free of charge.

  • Shipped today? Order within: Jul 23, 2024 05:00:00 -0700
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Same day shipping for orders placed before 3PM PST, and US customers get free shipping for all orders above $50. Shipping takes 2-5 business days.

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If you are not 100% satisfied with your purchase for any reason, just go through our easy return process by calling us, or e-mail us at You have 14 business days to return an item from the date you received it. However, for extended returns, call us at 1-800-900-GLUE for assistance. To be eligible for a return, your item may be used or unused but must be in the original packaging.


Starbond Black Medium-Thick Cyanoacrylate (CA) - Super Glue, KBL-500

Starbond KBL-500 Black Medium-Thick CA Glue is a flexible, rubber-strengthened, super glue that dries jet black.  This amazing adhesive has impact and shock absorbing properties, and can expand and contract with its surrounding environment, making it the perfect glue for reconing speakers, hobby R/C car tires, woodturning inlays, and heavy-duty bonding.  It’s also ideal for hiding imperfections, filling dark voids, and accenting specific areas in your projects, particularly in spalted wood.  KBL-500 can also be sanded down and polished to a high-gloss finish and will not crack in a malleable environment!

Professional Tip: Colored CA’s have a longer bonding time because of the added rubber compound.  It can take much longer than the typical minute or two to dry when large amounts of the adhesive are applied.  We recommend our Starbond Accelerator to reduce the bonding and drying times. 

WARNING: Use of this product can expose you to chemicals like Carbon Black and Methyl isobutyl ketone, which are known to the state of California to cause cancer.  For more information, please visit:

Use Starbond KBL-500 Black Medium CA Glue to:

  • Create black accent designs on spalted wood and other projects
  • Bond different materials to one another, such as wood, metal, glass, and rubber
  • Blend into similarly colored surfaces
  • Add polish and shine to your projects
  • Glue tires and lock threads on R/C cars
  • Bond top plate to the frame in speaker manufacturing – it can also attach: spider to cone assembly, dust cap to the cone, gasket to surround, surround to frame or cone, cone to coil connections, dressing lead wires to the cone, and can be used in select dust cap applications
  • Bond top plate to frame in speaker manufacturing
  • Repair and fill cracks, inclusions, voids, and knots in wood

For Use On:

  • Wood
  • Metal
  • Rubber
  • Leather
  • Ceramics
  • Gemstones
  • Rocks & Minerals
  • Carbon Fiber
  • Fiberglass
  • Most Plastics

Available in 2 ounces and 16 ounces sizes


  • Viscosity: 500 cPs
  • Drying Time With Accelerator: 15 - 20 sec
  • Drying Time Without Accelerator: 1 - 3 min
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Customer Reviews

Based on 295 reviews
Steve M.
Great Stuff!!!

This glue is awesome. The viscosity is perfect for filling small and large cracks. Sands nicely and looks great!


Works great!

Greg S.

Great stuff! Works especially well in filling tiny holes in sapwood.

Wilfredo P.B.

I liked the glue are awesome

Steve K.

I am super impressed with this product. I picked up the black and brown to fill the super fine gaps in my latest table build. Works great and I will definitely be telling fellow woodworkers and will be ordering more soon.

Robert R.

Not bad for what we do.
Starbound is what we use in the shop.
Big reason is it is dependable and consistent.
We build custom made Guitars and combine with custom painting processes.
We also do repairs.
See this vintage Gibson Les Paul.
We use Starbound to seal the crack prior to paint.
Great job Guys

Son Set Beach Productions
Concord, NC USA

Frank P.

Starbond black medium CA glue is awesome!! Not only does it hide imperfections but it looks natural and so easy to use. What I like the most is the bottle with the extra tips that are included. I usually have glue that dies on top and go through 2-3 by the time I use the whole thing.

Dave S.

I use Starbond to enhance the strength and beauty of old, damaged trees to create visually interesting art, that could not exist without Starbond CA. I highly recommend Starbond products. They have great service, shipping and advice when I call.

Hi Dave, your continued support is truly appreciated! We are always happy to help with any questions.

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