Epiroc 3115915390 O-Ring Set — Reliable Sealing for COP 1638 / 1838HD / 1838MUX+ Drifters
The Epiroc 3115915390 O-Ring Set (also referenced as 3115 9153 90) is a durable seal repair kit designed for COP 1638, COP 1838HD, COP 1838MUX+ and related hydraulic rock drill drifters. It supports stable hydraulic performance by replacing worn O-rings in the drifter assembly.
Use this O-ring set to help maintain reliable percussion, rotation and flushing performance while reducing unplanned downtime.
Each part is engineered and QC'd against the exacting standards your equipment demands.
part number 3115915390 / 3115 9153 90 for accurate identification
with COP 1638, 1638HD, 1640, 1838, 1838HD, 1838MUX, 1838MUX+, 1840 and more
seal repair kit supports stable hydraulic drifter operation

The Epiroc 3115915390 O-Ring Set (also referenced as 3115 9153 90) is a durable seal repair kit designed for COP 1638, COP 1838HD, COP 1838MUX+ and related hydraulic rock drill drifters. It supports stable hydraulic performance by replacing worn O-rings in the drifter assembly.
Use this O-ring set to help maintain reliable percussion, rotation and flushing performance while reducing unplanned downtime.

From mining fleets to manufacturing lines, this part ships globally and runs under load.
Proven in thousands of installations across mining, construction, energy and heavy manufacturing. Designed for 24/7 operation and backed by a responsive engineering support team.
Inspect every critical surface, tolerance and finish before you commit.






Key parameters below. Full dimensional drawings, tolerance sheets and material certificates available on request.