Rancilio 3/8″ Lock Washer
An internal-tooth lock washer sized for 3/8″ fittings, used across Rancilio plumbing connections to keep fittings from backing off under vibration.
SPECIFICATIONS
- Dimensions: 26mm x 18mm, internal teeth
COMPATIBILITY
- Fits: Rancilio 3/8″ plumbing fittings
- Replaces: Rancilio R_619
INSTALLATION
Simple DIY swap during any 3/8″ fitting service.
PRO TIPS
- Always reinstall a lock washer like this on plumbing joints that see heat cycling, a flat washer alone won’t hold torque as the fitting expands and contracts, and that’s how slow drips start.
