Sandvik / Tamrock
857 054 39 O-RING 1 BACKING RING
COMMANDO 120R
Available — Request Quote| Part Number | 857 054 39 |
| Description | O-RING 1 BACKING RING |
| Brand | Sandvik (Tamrock) |
| Assembly | CONTROL PANEL |
| Type | Drill Rig Spare Part |
Quick answer
857 054 39 (also written 85705439 or 857-054-39) is a Sandvik o-ring 1 backing ring spare part used in the CONTROL PANEL assembly of the Sandvik COMMANDO 120R. Verified compatible with 2 Sandvik machine models including COMMANDO 120 RF, COMMANDO 120R. Available as an aftermarket replacement drill part from BK Drilling — Turkey-based Sandvik and Epiroc spare parts supplier serving mining contractors worldwide. Quote on request via WhatsApp; typical lead time 3-7 days for stock items.
Part code alternate forms: 85705439, 857 054 39, 857-054-39.
Compatible machines
2
OEM cross-reference
857 054 39
About Sandvik 857 054 39 O-RING 1 BACKING RING
This O-ring provides critical sealing in the hydraulic or pneumatic circuits of the Sandvik COMMANDO 120R. Part of the CONTROL PANEL, it prevents fluid leakage at connection points and maintains system pressure integrity essential for efficient drilling operations.
This is an OEM-compatible aftermarket replacement part for the Sandvik COMMANDO 120R (COMMANDO 120R). Also compatible with Tamrock branded equipment of the same model series. BK Drilling supplies this part with fast worldwide shipping and competitive pricing.
Frequently asked questions
Why do O-rings fail in drilling equipment?
O-rings fail due to chemical degradation from hydraulic fluid, extreme temperature cycling, excessive pressure spikes, improper installation (twisting or pinching), and age-related hardening. Using the correct material compound for each application is critical.