Pneuflex's SPM 08 is stainless steel 316 bulkhead union straight push in fitting with equal 8mm hose push-in connectors at both ends, used to connect two 8mm O.D pneumatic tubes through a panel or other barrier and fixed by two bulkheads. Constructed entirely of SUS 316, 8mm bulkhead union pneumatic fittings are most often used in food, chemical, medical and pharmaceutical applications.