Refrigerant / HVAC Gasket Seal Cap

The QC-4 is a gasket seal cap used with 1/4″ SAE service ports in refrigeration and HVAC applications. It seals the service connection to prevent refrigerant leaks and protect from dirt ingress when servicing is complete.

Key Features

• Serves as a cap for 1/4″ SAE service valves, providing sealing at the port once maintenance is done.

• Incorporates an internal gasket (soft elastomer) that compresses to form a leak-tight seal against the male valve stem.

• Constructed of durable plastic overmold with a molded grip surface for hand tightening.

• Matches standard 1/4″ SAE thread size and sealing geometry for universal compatibility with common service valves.

• Commonly used in refrigeration systems, air conditioners, and other sealed-system appliances.

• Always confirm this cap matches the service valve size and system specification before use.