


Sandvik / Tamrock
856 462 99 O-RING
DS410
| Part Number | 856 462 99 |
| Description | O-RING |
| Brand | Sandvik (Tamrock) |
| Assembly | COMPRESSOR |
| Type | Drill Rig Spare Part |
Quick answer
856 462 99 (also written 85646299, 856-462-99, or 856.462.99) is a Sandvik o-ring spare part used in the COMPRESSOR assembly of the Sandvik DX700. Verified compatible with 20 Sandvik machine models including DD320-40, DD321-40, DD321-40C. 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: 85646299, 856 462 99, 856-462-99.
Compatible machines
20
OEM cross-reference
856 462 99
About Sandvik 856 462 99 O-RING
This O-ring provides critical sealing in the hydraulic or pneumatic circuits of the Sandvik DX700. Part of the COMPRESSOR, 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 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.









