Damage or fouled relief valve seat.

安全阀阀座损坏或受到污染。

Damaged or fouled relief valve seat.

安全阀阀座受到损坏或污染。

Place the relief valve seat back into the chamber bore.

将安全阀阀座放回到镗孔内。

Remove the pressed in relief valve seat and seat O-ring.

拆卸压进去的安全阀阀座和阀座o形环。

Major production and distribution piston rings and valve seat.

主要生产和经销活塞环及气门座圈。