密封装置
Sealing device
sealing set
sealed device
seal set
sealing arrangement
seal installation
seal device
seal assembly
encapsulation fitting
the equipment of pressurize
packing assembly
sealed unit
seals
sealing
air tight device
seal
seal housing
gland seal
seal ring
sealed-in unit
leak free installation
Gland
spike roller
packoff
密封结构
seal up structure
sealing structure
seal configuration
seal design
sealing mechanism
Sealed structure
seal structure
sealing construction
sealing structures
airproof structure
leak tight structure
seal’s structure
leakproof structure
hermetically-sealed construction
Gas-and-water-tight construction