... and many more 3)warranty:1 year Metric NBR O RING Box FOR EXCAVATOR: VOLOV, KOMATSU, KATO, KOBELCO, HITACHI, CAT, SUMITOMO, DAEWOO ... , HYUNDAI, AND MANY MORE. Product: NBR O ring boxMaterial: rubber NBRQty: 666pcsSize: 36 itemsHardness: 90 SHORE AApplication: Excavator ... from you with detailed inquiry of any types of O ring box.