# Overview

The hardness of most rubbers is specified using the Shore A scale (while the Shore D scale is used for harder materials). There are formulas (Wikipedia’s version, 3D Vision’s  version) which gives an equation to convert Shore A hardness values into a Youngs Modulus, useful when you want to calculate the force required to compress the rubber by a certain amount. Each version of the equation gives different results, so treat the values with caution.

# Nitrile Rubber

Nitrile is has a better resistance to fuel than Neoprene. It is also slightly more expensive (see the Price Guide). Unique property is that you can get it in white

## Stats:

P = poor, F = fair, G = good, E = excellent

 Property Value Hardness (Shore A) 60 Usable Temperature Range (C) -40 to 101.7 Max Tensile Strength (MPa) 7.0 to 24.6 Abrasion G Tear Resistance F Electrical Insulation P Flame Resistance P Ozone Resistance F UV Resistance G Acid Resistance G Solvent Resistance P Oil Resistance E