Shore A V.S. Shore 00 V.S Asker C

Shore Hardness Scales provide us with a common reference point when discussing raw materials. The hardness of a foam can be critical for specific  applications. The most common testing standard is ASTM D2240, which uses a variety of scales, depending on the intended use. Each scale results in a value between 0 and 100, with the higher values indicating a harder material. The most common scales referenced when measuring foams, include:

Shore 00:

• Measures soft closed cell elastomeric foam, sponge rubbers

Shore A:

• Measures solid rubber sheets, rolls, molded parts, and rigid elastomeric foams.

Asker C:

• Measures closed cell XLPE foams, rubbers, and sponges.

Hardness Rating Chart:

Type 00 – Sponge Rubber, Very Soft Rubber

Type A – Soft Rubber, Elastomers, Waxes, Printing Rollers