Speargun Rubber Bands Made To Order
Speargun rubber bands custom made to specified length. Speardiver small hole rubber tubing
Speargun bands custom made to your specified length, using Speardiver small hole Black over Amber rubber tubing, color coded replaceable wishbones and %100 Dyneema wishbone line. Band length refers to the length of the rubber tubing end to end, it does not include the additional length of the wishbones + line.
We cannot recommend a band length based on your speargun model/length. Every speargun and shaft have a different configuration, and so is every user's physical ability to pull the bands. You can use your old bands for reference. If that's not available here's a general formula used to achieve %300 band stretch (which is conservative ie. not very hard to pull). Measure the distance from the band hole in the speargun muzzle to the tab or notch on which the band will be loaded. Multiply this measurement x 2 (because the band is stretched over both sides of the speargun) then divide the resulting number by 3. This is the measurement to provide us when ordering a band. We disregard the additional length of the wishbones + line because it more or less offsets the length of rubber tubing lost when routing it through the muzzle. It's better to have a band made too long than too short, if it ends up being too long/weak the wishbone line can be shortened, or one end of the rubber tubing can always be cut shorter and retied.
Available band diameters
Available wishbone colors (If a color other than black is required please specify in a note at checkout)
If you're looking for speargun rubber that will stretch to %400, hold energy in a loaded state for a long duration with minimal power loss, and have a continuous smooth release instead of a burst that results in muzzle kick and reduced speargun accuracy, then this is the rubber tubing for you.
Understanding rubber tubing specifications
For conventional 5/8" (16mm) speargun bands add 1/4" left wall thickness + 1/8" ID/hole + 1/4" right wall thickness for a total of 5/8" OD. The specification for typical 5/8" speargun bands is 1/8 X 1/4 (ID X Wall).
In comparison Speardiver small hole rubber tubing ID is reduced by half (1/16") and the wall is increased by 1/32". The tubing has a smaller hole and maintains 5/8" OD. The specification for Speardiver small hole 5/8" rubber tubing is 1/16 X 9/32. The same formula applies to all Speardiver small hole rubber tubing: 14mm, 16mm, 17.5mm and 19mm.
Why the format of this rubber tubing was chosen
- Quality speargun rubber tubing is made of Latex/natural rubber, which comes from the sap of the rubber tree. Latex in its natural color Amber is less resistant to sunlight. An outer layer of black dyed Latex adds UV protection and extends the life and performance of the band.
- Cut open a band open after a day of spearfishing and you'll see water come out of the hole. The cycles of stretching and compression draw water into the band no matter how well you tie the wishbone, and it remains trapped there. Salt water damages the band from the inside, you can see this layer of deteriorated rubber immediately around the hole of a used band. The small 1/16" hole significantly lessens water intrusion into the band, improving performance and increasing longevity.
- Less hole equals more rubber at the same diameter, which equals more power without increasing the profile of your speargun.
Speardiver 1/16" ID tubing next to conventional 1/8" ID tubing