Elastometric Expansion Device Specifications
The Neoprene compound for this expansion device shall be in accordance with ASTM D2000 Specification:

Physical Properties

Requirements

Hardness - Shore A

60 + 5

Tensile Strength

1500 psi

Ultimate Elongation

325 % min.

Compression Set 22hrs @ 100° C

35 % max.

Ozone Resistance 25pphm / 20 % strain / 96 hrs / 40° C

No Cracks

ASTM oil # 3 for 70 hrs @ 100° C

120 % max.

Heat Resistance : 70hrs @ 100° C

Change in Hardness

+15

Change in Tensile Strength

-15%

Change in Elongation

-40%