864

H864 is designed to be a press fit into to an open groove with a metal cage double lips dust wiper. H864是聚氨酯骨架雙唇防塵環，用來防止粉塵、污染物、金屬碎屑進入液壓缸，減少了因外部污染物嵌入密封元件引起刮傷的危險，主要適用於工程機械。

622

H621 is embedded a rubber energizer and a polyacetal anti-extrusion ring to be a full range pressure seal.

660

H621 is embedded a rubber energizer and a polyacetal anti-extrusion ring to be a full range pressure seal.

735

H621 is embedded a rubber energizer and a polyacetal anti-extrusion ring to be a full range pressure seal.

54

H621 is embedded a rubber energizer and a polyacetal anti-extrusion ring to be a full range pressure seal.

80

H621 is embedded a rubber energizer and a polyacetal anti-extrusion ring to be a full range pressure seal.