YUET FUNG MACHINERY EQUIPMENT (HK) CO., Ltd. Main product:hydraulic piston seal kits and hydraulic cylinder seal kits, Excavator seal kits:BOOM SEAL, ARM SEAL, BUCKET SEAL, SWING MOTOR SEAL, MAIN PUMP SEAL.rod seals, dust seals, buffer seals, back up ring, wearing ring, center joint seal, oil seal, oring seals. These product work as good as the original binding one and it is blessed with very competitive price. We have complete common brands seals for excavator and rock breaker hammer. Further more, we own two factories, so we can do whatever size of seals group, orings and oil seal you want. If want more details, please scan 3w dot yfhparts dot com /or send your inquiry to [email protected]