Image Venting EZ Boss-Lock Cam & Groove Type D Coupler x Female 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 ALDEZ200 2" 356T6 Aluminum Nitrile ALDEZ300 3" 356T6 Aluminum Nitrile ALDEZ400 4" 356T6 Aluminum Nitrile RLDEZ200 2" 316 Stainless Steel Nitrile RLDEZ300 3" 316 Stainless Steel Nitrile RLDEZ400 4" 316 Stainless Steel Nitrile