Polyurethane Sealing Ring (O Ring)

Bestry’s polyurethane sealing ring series products are synthesized from raw rubber with our own technology through mixing, molding and vulcanization. These products are featured with high strength, wear resistance, oil resistance, anti-aging, flex resistance, high temperature resistance, and small permanent compressing disformation. In particular, the OR99 series is designed with excellent hydrolysis resistance and are specially designed for various sealing products with different requirements.

Product performance / product number	OR9901	OR9903	OR9905	OR9922	OR9926
Hardness, Shore A	95	95	95	96	96
Tensile strength, MPa	>45	>40	>50	51.5	45
Elongation at break, %	>450	>400	>430	310	400
Tear strength, KN / m	>100	>100	>110	125	140
Resilience, %	>45	>40	22	22	23
Permanent compressing disformation, % 70 ℃ / 24 hr	<30	<30	<30	<35	25 ℃ / 24 hr 18.5
Permanent compressing disformation, % 100 ℃ / 24 hr	<35	<40	<40	<50	70 ℃ / 24 hr 40
Minimum operating temperature	-30	-50	-25	-25	-25
Maximum operating temperature	110	110	110	150	110
Chemical resistance	Normal	Excellent	Normal	Normal	Poor

For more products, please consult our local sales engineers.