Vespel® SP-1
Vespel® SP-1 virgin polyimide is an unfilled base resin. It scores better than all other Vespel® grades on strength, elongation, purity and electric and thermal insulation. It can operate in temperatures between cryogenic and 300 °C. Thanks to its resistance to stress relaxation, Vespel® SP-1 will prove to be a highly reliable seal, even outperforming metal-to-metal seals with much narrower tolerances.
DATASHEET
Property
UNIT
NORM
Value
Tensile strength (23°C)
N/mm²
DIN 53455
80
Elongation at break (23°C)
%
DIN 53455
7
Tensile modulus (23°C)
N/mm²
DIN 53457
3100
Coefficient of friction v-steel - Dynamic
--
0.29
Water absorption
%
DIN 53495
0.24
Dielectric strength
KV/mm
DIN 53481
22
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