剪切丢手密封装置
shear release seal assembly
密封装置
Sealing device
seal installation
Gland
leak free installation
seal device
sealed unit
gland seal
sealing set
sealed device
seal set
sealing arrangement
seal housing
air tight device
seals
spike roller
seal
sealing
packoff
the equipment of pressurize
packing assembly
encapsulation fitting
seal ring
水泵密封装置
water pump seal equipment
水密封试验装置
water-sealed testing device
艉轴密封装置
stern sealing device
stern shaft sealing
sealing gear of tailshaft