


Sandvik / Tamrock
853 879 79 O-RING
DS410
Available — Request Quote| Part Number | 853 879 79 |
| Description | O-RING |
| Brand | Sandvik (Tamrock) |
| Assembly | OIL SEPARATOR ASSEMBLY |
| Type | Drill Rig Spare Part |
Quick answer
853 879 79 (also written 85387979 or 853-879-79) is a Sandvik o-ring spare part used in the OIL SEPARATOR ASSEMBLY assembly of the Sandvik DX700. Verified compatible with 27 Sandvik machine models including COMMANDO 120 RF, COMMANDO 120R, COMMANDO DC125R. 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: 85387979, 853 879 79, 853-879-79.
Compatible machines
27
OEM cross-reference
853 879 79
About Sandvik 853 879 79 O-RING
A precision-molded sealing element for the Sandvik DX700, this O-ring is used in the OIL SEPARATOR ASSEMBLY to create a reliable static or dynamic seal. Even minor O-ring deterioration can lead to system pressure loss, so scheduled replacement during routine maintenance is strongly recommended.
This is an OEM-compatible aftermarket replacement part for the Sandvik DX700 (DX700). 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.

