Image Venting EZ Boss-Lock Cam & Groove Type B Coupler x Male NPT 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 ALBEZ200 2" 356T6 Aluminum Nitrile ALBEZ300 3" 356T6 Aluminum Nitrile ALBEZ400 4" 356T6 Aluminum Nitrile RLBEZ200 2" 316 Stainless Steel Nitrile RLBEZ300 3" 316 Stainless Steel Nitrile RLBEZ400 4" 316 Stainless Steel Nitrile