By using FRT gastight door, O2 level can be maintained at 1%, while usually does at 3%.Unique patented inflatable sealing design

Unique patented inflatable sealing design applies to any deformation and irregular ground or wall structure.

No matter the deformation is from the body itself, pressure, thermal inflation or shrinkage, FRT gastight door will perfectly offset them, and it guarantees ultra low oxygen (ULO) and 100% gastight condition

Gas tight Door 1