Image Vent-Lock® Safety Cam & Groove Type C Coupler x Hose Shank Markets Safe Hazardous Material Transfer, Refining, Hydraulic Fracturing: Low Pressure Systems Product Options Part Number Size Seal Material L100-C-SS 1" Nitrile Rubber 316 Stainless Steel L150-C-SS 1-1/2" Nitrile Rubber 316 Stainless Steel L200-C-SS 2" Nitrile Rubber 316 Stainless Steel