Image Venting EZ Boss-Lock Cam & Groove Type C Coupler x Hose Shank Unlike standard Cam and Groove, Venting EZ Boss-Lock is rated for air service. The maximum PSI varies with size and material. Drill down on a specific part number to see the full details. Markets Agriculture & Forestry, Chemical Processing, Construction, Energy / Oil & Gas, Transportation, Steel Processing, Mining Product Options Part Number Size Material Gasket ALCEZ200 2" 356T6 Aluminum Nitrile RLCEZ200 2" 316 Stainless Steel Nitrile ALCEZ300 3" 356T6 Aluminum Nitrile RLCEZ300 3" 316 Stainless Steel Nitrile ALCEZ400 4" 356T6 Aluminum Nitrile RLCEZ400 4" 316 Stainless Steel Nitrile