... hatchway, fire-door, air tight door, etc..2. Main materials1> If there is no special requirements, inflatable seal is usually made ... sealing agents are water, air or other inert gases.2> If the seal needs contacting with oil, organic solvent, etc., it ... agents. Its service temperature ranges from -30oC to +80oC.3> If the inflatable seal is required to use at the temperature ...