• 010 - Low-Pressure Hose to 2nd Stage Regulator
• 011 - Standard Low-Pressure Port to Hose (3/8 UNF)
• 012 - High-Pressure Port to Hose (7/16 UNF)
• 014 - Standard Yoke Regulator to K-Valve
• 112 - Standard DIN Regulator to DIN Valve

The O-rings in this kit are 90-duro and well suited for the SCUBA applications we describe. The stiff 90-duro O-rings are more durable in static applications where the O-ring is providing a seal with stationary or occasionally moving parts, such as a valve. The fluorocarbon elastomer (aka Viton™, aka FKM, aka FPM) O-rings in this kit are brown in color.