Description
KOCKUM SONICS
21768378
PISTON RINGS
21768389
STAINLESS STEEL WASHER
The Kockum Sonics 21768378 piston rings are supplied together with a 21768389 stainless steel washer. Both parts serve piston-driven equipment within the vessel’s control system. Piston rings seal the gap between a piston and its cylinder, holding pressure on the working side, while a washer seats under a fastener or between components to spread the clamping load. The washer is made of stainless steel, a material chosen for corrosion resistance in damp machinery spaces. The parts are offered in new without box condition.
Key Features
✓ Piston rings, part number 21768378
✓ Stainless steel washer, part number 21768389
✓ Rings and washer supplied together
✓ Stainless steel washer construction
✓ Piston sealing parts for piston-driven equipment
Marine Applications
✓ Piston assembly overhaul on Kockum Sonics equipment
✓ Planned maintenance of piston-driven control equipment
✓ Onboard spares holding for scheduled ring changes
Technical Support
Prota Marine provides technical support, repair and onboard installation for the piston ring set and the wider marine control system. Fault diagnosis on the piston assembly and commissioning support after reassembly are also available.
