Salvimar’s S400 Acid Green Rubber

The new mixture of rubber is tested up to a 400% stretch for 30 minutes and is created via the extrusion process.
The results demonstrate an exceptional capacity to maintain unaltered characteristics or loss of stretch memory for optimal elasticity and power retention
Optimal power retention characteristics even at low temperatures
Packed in 1.5 mt.

What length rubber do I need?

If you are not sure what length you need for your speargun please feel free to get in touch. However here are the recommended stretch factors and equations to use.

• S600 14mm is suitable for a stretch factor of 337.5%
• S600 16mm is suitable for a stretch factor of 337.5%

Now for the equations:

For Circular Bands

1. Measure from the furthest notch/shark fin to the start of the muzzle hole
2. Multiply by 2
3. Divide by your stretch factor. If you would like 270%, divide by 2.7. If you would like 340%, divide by 3.4
4. This number will equal number of cm needed.

For Roller Bands

We’ll make your bands to fit your specific roller, the most common set ups would be; Rob Allen, Pathos or Salvimar style bands. If you have a different configuration to these above, please let us know and we’ll make it for you!

1. Measure from the furthest notch round the muzzle and back down the length of the gun to where the rubber will sit securely.
2. Multiply by 2
3. Divide by your stretch factor. If you would like 270%, divide by 2.7. If you would like 340%, divide by 3.4
4. This number will equal number of cm needed.

For Screw in Rubbers

Measure from the furthest notch to where the rubbers screw in

1. Measure from the furthest notch to where the rubbers screw in.
2. Multiply by 2
3. Divide by your stretch factor. If you would like 270%, divide by 2.7. If you would like 340%, divide by 3.4
4. This number will equal number of cm needed.

Remember that not all gun rubbers are made equally and the same is true for spears. Some spears work better when powered by a specific rubber and visa versa.

Also, be sure not to overpower your spear as this will lead to inaccuracies in your shots. Of course if you are unsure then please get in touch.

If you need any assistance, please email enquiries@spearfishing.co.uk.