The Injector Sealing Ring is a genuine Hatz component (OEM No. 05070500) designed to seal the interface between the diesel injector and the cylinder head on Hatz single-cylinder engines. Made from copper for reliable crush-seal performance under heat and pressure, it helps prevent fuel and combustion gas leakage, protecting injector seating surfaces and maintaining correct injection pressures. This small but critical ring supports smooth starting, steady running and optimal fuel efficiency. It is suitable for Hatz 1B series engines commonly found in compact construction and garden machinery, including the 1B20 and 1B30. As an OEM, Genuine Hatz part, it offers precise fit and long service life when installed during injector replacement or routine top-end maintenance.

Key Features:
– Genuine Hatz part for assured compatibility and performance
– Copper crush-seal design for dependable, gas- and fuel-tight sealing
– Helps maintain correct injector protrusion and spray pattern consistency
– Reduces risk of leakage, misfire and carbon build-up at the injector seat
– Stable under thermal cycling and diesel vibration in demanding duty
– Simple, quick replacement during injector service to minimise downtime
– Sized to the OEM specification for Hatz 1B-series injector holders
– Corrosion-resistant material for predictable torque and sealing behaviour
– Supports engine efficiency, emissions control and cold-start reliability
– OEM number 05070500 for accurate identification and ordering

Typical Applications:
Used when fitting or refitting injectors on Hatz 1B engines powering plate compactors, generators, pumps, light rollers, mixers, forestry and landscaping equipment. Ideal for scheduled injector servicing, top-end overhauls, or resolving fuel seepage and blow-by at the injector seat to restore reliable operation on site or in the workshop.

Also known as:
Injector copper washer, injector seat washer, copper crush washer, injector nozzle gasket, fuel injector sealing washer, Hatz injector gasket, injector heat shield washer (context dependent), injector sealing gasket.

Fits Models:
1B20, 1B30, 1B40, 1B50

Alternate Part Numbers:
05070500

Product Specifications