Polyurethane Elastomer, Ether Based

Material Notes:
Polyurethane elastomer is a polytetramethylene glycol ether based polyurethane elastomer featuring superior resilience, low temperature properties, low compression set, excellent hydrolytic stability, and resistance to attack by microorganisms. Its typical applications include wheels, seals, and gaskets.

 

Physical Properties	Metric	English	Comments
Density	1.14 g/cc	0.0412 lb/in³
Mechanical Properties
Hardness, Shore A	88 - 96	88 - 96	ASTM D2240
Hardness, Shore D	43 - 51	43 - 51	ASTM D2240
Tensile Strength at Break	44.8 MPa	6500 psi	Tensile stress at break.
Elongation at Break	450 %	450 %
50% Modulus	0.00758 GPa	1.1 ksi
100% Modulus	0.0112 GPa	1.62 ksi
300% Modulus	0.0248 GPa	3.6 ksi
Flexural Modulus	0.0758 GPa	11 ksi
Tear Strength	133 kN/m	759 pli
Taber Abrasion, mg/1000 Cycles	10	10	H22 Wheel
Compression Set	25 %	25 %	23°C.
Compression Set, Elevated Temperature	28 %	28 %	70°C
Tensile Set	30 %	30 %	Elongation set after break
Thermal Properties
CTE, linear 20°C	152 µm/m-°C	84.4 µin/in-°F
Vicat Softening Point	106 °C	223 °F
Glass Temperature	-25 °C	-13 °F
Clash-Berg Stiffness Temperature	7.78 °C	46 °F