Sandvik / Tamrock
550 460 21 O-ring
DL421-15C
Available — Request Quote| Part Number | 550 460 21 |
| Description | O-ring |
| Brand | Sandvik (Tamrock) |
| Assembly | Flushing valve assembly |
| Type | Drill Rig Spare Part |
Quick answer
550 460 21 (also written 55046021 or 550-460-21) is a Sandvik o-ring spare part used in the Flushing valve assembly assembly of the Sandvik DX700. Verified compatible with 10 Sandvik machine models including DL310-7, DL311-7, DL321-7. 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: 55046021, 550 460 21, 550-460-21.
Compatible machines
10
OEM cross-reference
550 460 21
About Sandvik 550 460 21 O-ring
This O-ring provides critical sealing in the hydraulic or pneumatic circuits of the Sandvik DX700. Part of the Flushing valve assembly, 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.
