Scottfrio FlareGasket
In air conditioning and refrigeration systems, a flare gasket (often referred to as a flare seal or crush washer) serves as a critical mechanical interface between the flared end of a copper tube and the brass union or fitting.
While a properly made flare connection is designed to be metal-to-metal, flare gaskets are frequently used to enhance the integrity of the seal. Here is exactly what they help with:
Compensating for Surface Imperfections
Preventing "Galling" and Friction
Vacuum test for connection with FlareGaskets
Vibration Dampening
Connection with FlareGasket
Pressure Resistance
· The Fix: Because the gasket increases the total contact surface area between the union and the flare, it helps the joint withstand higher $PSI$ (pounds per square inch) without the refrigerant finding an escape path.
Burst pressure test to connectors with FlareGasket
Comparison of Connection Types
Feature |
Standard Flare (Metal-to-Metal) |
Flare with Gasket/Seal |
Tolerance |
Requires near-perfect flare face. |
Forgiving of minor scratches. |
Reliability |
Susceptible to vibration over time. |
High resistance to vibration leaks. |
Ease of Use |
High torque required for "crush." |
Reliable seal at lower torque specs. |
Application |
Standard low-pressure systems. |
High-pressure/Critical systems. |