Notes: 93087.5 O-RING 117.07x3.53 - VITON 90 SHORE is original DOOSAN product. 93087.5 O-RING 117.07x3.53 - VITON 90 SHORE1 is commonly used in transmissions/axles/engines . if you have any questions please do not hesitate to contact us via Whatsapp +17275652849