This O-Ring is a replacement for Bobcat OEM 99K12. A low cost, high quality aftermarket part designed to meet or exceed OEM quality. Details: Circular shape. Prevents fluid leaks. Designed to fit mating pieces of hardware on your equipment. Compatible with the following Bobcat Models: All-Wheel Steer Loaders: A220, A300 Attachments: 8709 BACKHOE, ANGLE BROOM, BREAKER, DOZER, HYDRA-TILT, LOADER - ATTACHMENTS, MAINTENANCE ITEMS, PLANERS, POWER-TILT, ROTARY CUTTER, SOIL CONDITIONER, STUMP GRINDER, SWEEPER, TILLER, TRENCH COMPACTOR, TRENCHER Compact Excavators: 322, 325, 328, 331, 334, 341 Compact Track Loaders: 864, T190, T200, T300 Skid-Steer Loaders: 450, 453, 463, 553, 653, 751, 753, 763, 773, 853, 863, 873, 883, 963, S185, S250, S300 Shipping, Returns & Refunds Policies: Our Shipping Policy can be found here. Shipping times can vary depending on location - multiple options will be provided. Our Return Policy can be found here. Our Refund Policy can be found here. Contact Us: Parts can vary depending on your serial number, please make sure this is the correct part for your equipment. If you need any help, please call, text, or email us here and our team will get back to you ASAP!