Steel Adapter, 0.50 Inch O-Ring Face Seal Shoulder Internal Braze

O-ring face seal connections are built specifically for that kind of problem. The ORFS configuration on this adapter creates a metal-to-metal contact with an O-ring backup, which gives you a positive seal rather than relying on thread contact alone. If your current setup is using a different connection type and you're seeing seepage, switching to ORFS is a well-regarded fix in high-pressure hydraulic circuits where leak-free performance matters.

This adapter uses a 0.50 inch O-ring face seal, which should give you a good, tight connection for your hydraulic lines.