Sandvik / Tamrock
551 709 54b Seal, O-Ring
DD321-40
Available — Request Quote| Part Number | 551 709 54b |
| Description | Seal, O-Ring |
| Brand | Sandvik (Tamrock) |
| Assembly | Separator, Mud |
| Type | Drill Rig Spare Part |
Quick answer
551 709 54b (also written 55170954b or 551-709-54b) is a Sandvik seal, o-ring spare part used in the Separator, Mud assembly of the Sandvik DX700. Verified compatible with 22 Sandvik machine models including DD320S, 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: 55170954b, 551 709 54b, 551-709-54b.
Compatible machines
22
OEM cross-reference
551 709 54b
About Sandvik 551 709 54b Seal, O-Ring
This sealing component prevents hydraulic fluid leakage and contamination ingress in the Sandvik DX700 hydraulic system. Located within the Separator, Mud, compromised seals lead to reduced drilling pressure, increased oil consumption, and potential damage to hydraulic pumps and valves.
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.