Double lock square manhole
Double lock square manhole
Technical Data
And material contact parts: 304 or 316L
Rubber Level: silicone rubber (VMQ), ethylene propylene diene monomer (EPDM), nitrile rubber (NBR), Viton (of FKM)
Other parts: 304
Standard seal material: silicone rubber (VMQ)
Inner surface treatment: 0.8um-0.5um
Surface treatment: Mirror polished, honed, sandblasted

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