This lot of two genuine KOMATSU backup O-rings in Buna 90 B/U ring size is a must-have for anyone in need of heavy equipment parts and accessories. These rings are designed to fit seamlessly into your equipment, ensuring optimal performance and durability. With the brand name KOMATSU, you can trust that these rings are made to last. The manufacturer part number 65985 guarantees the quality and compatibility of these rings with your equipment. Don't miss out on this essential purchase for your business and industrial needs.