4019900123 AL28 Gun Repair Kit Seat

4019900123 AL28 Gun Repair Kit Seat

Gun Repair Kit- Water Leakage From Gun.

What it is: A seat component in a spray gun’s repair kit. Usually the part where the valve or nozzle seals against, preventing leaks.

Where used: In spray gun / pressure washer gun mouth / internal valve area.

Function:

Provides a precision surface for sealing when gun is closed.

Helps control spray pattern and reduce drip/leak when the trigger is released.

Protects the rest of the gun’s body from wear since fluid hits this seat first.

When to replace:

If gun drips even when trigger is off.

If seal is worn, damaged, or has grooves/corrosion.

If spray is uneven or pressure drops at the nozzle.

Important checks:

Material of the seat (metal, ceramic, PTFE etc.)

Fit compatibility with gun model (must match the “AL28” gun type)

Condition of sealing surfaces