... .ISO9011 rubber joint description:1.used in air,water,oil,acid,2.have shock absorption3.easy installment and flxible 4.ISO9011-2000Performance ... the inner wall of the rubber joint in high temperature,acid and alkali and oil resistant pipeline.thereby extending its service ... -250DApplicable mediaAir. Compressed air,water,sea water,hot water,weak acid,etc.