Sandvik / Tamrock
550 421 99 Seal, Copper
DC301R
| Part Number | 550 421 99 |
| Description | Seal, Copper |
| Brand | Sandvik (Tamrock) |
| Assembly | ENGINE ASSEMBLY |
| Type | Drill Rig Spare Part |
Quick answer
550 421 99 (also written 55042199, 550-421-99, or 550.421.99) is a Sandvik seal, copper spare part used in the ENGINE ASSEMBLY assembly of the Sandvik DX700. Verified compatible with 15 Sandvik machine models including COMMANDO 300, DB120, DC301R. 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: 55042199, 550 421 99, 550-421-99.
Compatible machines
15
OEM cross-reference
550 421 99
About Sandvik 550 421 99 Seal, Copper
Designed specifically for the Sandvik DX700 ENGINE ASSEMBLY, this seal ensures leak-free operation of hydraulic circuits. Mining environments expose seals to extreme temperatures, pressure spikes, and abrasive particles, making periodic replacement essential for uninterrupted 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
What happens when a hydraulic seal fails?
A failed hydraulic seal causes fluid leakage, leading to reduced system pressure, loss of machine force and speed, increased oil consumption, environmental contamination, and potential damage to pumps and valves operating without adequate fluid supply.
How can I identify worn seals in my drilling equipment?
Signs of seal wear include visible fluid leaks around cylinders and connections, reduced hydraulic system pressure, slower machine movements, increased oil consumption, and contaminated hydraulic fluid appearing milky or discolored.
