Biosafety Inflatable Seal Door suitable for high-level biosafety laboratories such as BSL-/4 and ABSL- 3/4, meeting high airtightness requirementsAvailable in single-bladder and dual-bladder configurations. The dual-bladder modelis equipped with on-site airtightness self-test function. Working principle: After the dooris closed, the inflatable sea strip is inflated and expanded to form a tight seal between the door and the frame: before thedoor is opened, the seal strip automatically deflates and retracts to avoid wear. Constructed with ful stainless steel seamless welding, it is resistantto corrosion by disinfectants such as formaldehyde, vaporized hydrogen peroxide, and chlorine dioxide. It supports single-door independent control or multi-door interlocking, ensuring safety and reliability.