Sandvik / Tamrock
870 902 79 O-RING
CHA700
| Part Number | 870 902 79 |
| Description | O-RING |
| Brand | Sandvik (Tamrock) |
| Assembly | HYDR. RECEIVER ASSY |
| Type | Drill Rig Spare Part |
Compatibility
Machine Models
Quick answer
870 902 79 (also written 87090279, 870-902-79, or 870.902.79) is a Sandvik o-ring spare part used in the HYDR. RECEIVER ASSY assembly of the Sandvik DD320-40. Verified compatible with 32 Sandvik machine models including AXERA 6-240, AXERA 7-240, AXERA 8-290. 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: 87090279, 870 902 79, 870-902-79.
Compatible machines
32
OEM cross-reference
870 902 79
About Sandvik 870 902 79 O-RING
This O-ring provides critical sealing in the hydraulic or pneumatic circuits of the Sandvik DD320-40. Part of the HYDR. RECEIVER ASSY, 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 DD320-40 (DD320-40). 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.
