| Definition
of PBD Terms
Listed below are definitions and additional
information on the terms and reported numbers found on the product data
bulletin above.
Shore A Hardness
This test involves the penetration of a
specific shaped point when forced onto the elastomer surface. "Shore
A" specifies the type of durometer. This test permits hardness
measurements based on initial indentation and/or indentation after a
specified time period. The reported value of 95 Shore A is for an initial
reading.
Tensile Strength
The reported tensile strength is the force
required to stretch the elastomer in one direction. The reported value is
1750 psi at break. In other words, 1,750 pounds could be suspended from a
one-inch-square rod before failure.
Elongation
This is the distance the material can
stretch before failure. 100% elongation implies that a sample can be
stretched to twice its original length before breaking. 200% elongation
means the sample can be stretched to three times its original length
before failure occurs. The higher the elongation, the more elastic the
material. |
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