Description

Rubber made from natural latex is different from rubber made from extruded or
ynthetic materials. Primeline uses a “continuous immersion process” in which the rubber is built in a layered process that offers high physical properties with less than
50 micrograms of protein per gram. Extracted from the Hevea Brasiliensis tree, it is
processed in the original liquid form and avoids the chewing process, resulting in an evenly distributed formula. The result is a product with superior physical properties
including higher tear resistance. These features are essential to provide the Salvimar by Primeline elastic band with greater strength and higher performance.
Salvimar offers its customers dedicated PRIMELINE productions made specifically for our company with an accurate choice of compounds and thicknesses.

Salvimar by Primeline compounds are of three different types: HURRICANE, PRIME and OPTIMUS. Each of them has different technical characteristics to adapt to each
spearfisher’s need

HURRICANE, the compact compound with high hardness is developed to maintain
power unchanged after the speargun has been loaded.
Recommended for spearfishing with the waiting technique and for those who
prefer reactivity and explosiveness.

PRIME, formula designed to obtain an optimized elastic modulus that guarantees
an excellent ratio between loading effort and power return. This makes the PRIME
compound versatile and suitable for all types of fishing

OPTIMUS, Softer compound: ensures a progressive and constant thrust, and
allows to shorten the standard length of the rubber band on short-barrelled spearguns
to increase their power. It facilitates the speargun loading.

The production process allows to choose the bore size: the ID, which can be
STANDARD ID 3.2mm or MICRO ID 1.6mm.
The rubber band with standard 3.2mm ID (inner diameter) has an excellent ratio
between load force and power delivered. The choice of the smaller diameter MICRO ID 1.6mm allows to increase the power of the rubber band with the same external
dimensions, facilitating the swinging during the fishing action.

Want us to make your speargun band?

When ordering, please choose one of the pre-made band options using the check boxes provided. Here is a description of each option:

1. Rob Allen dyneema wishbone. This is a closed loop band, common setup for RA, Riffe and Cressi spearguns. As it is a  dyneema wishbone, it is suitable for finned or bevelled notched spears.
2. Looped wishbones with removable bridle. These are perfect if you need to undo the bridle to fix it to your speargun. Guns that need this style are brands such as Pathos and Salvimar. These are made with a Dyneema wishbone and therefore suitable for finned or bevelled notched spears.
3. Metal wishbone – used to replace screw in rubbers for a sharp spear notch. This is a closed loop band and such suited for branded spearguns such as RA, Riffe and Cressi.
4. Roller bands are designed for your roller gun. If you have a different configuration than Rob Allen, Pathos or Salvimar roller bands, let us know and we’ll make it for you.
5. Screw in rubbers– we’ll insert screw in adapters and tie them off so you can use them with your euro guns. You will need a separate wishbone, you may have one with your old bands. Or if it is unusable or you don’t have one, we would recommend this.

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.

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