


Sandvik / Tamrock
865 395 99 SEAL KIT
Rock Drill Spare Part
| Part Number | 865 395 99 |
| Description | SEAL KIT |
| Brand | Sandvik (Tamrock) |
| Assembly | HYDRAULIC MOTOR (OMSS 100) |
| Type | Rock Drill Spare Part |
Compatibility
Drifter Models
Machine Models
Quick answer
865 395 99 (also written 86539599, 865-395-99, or 865.395.99) is a Sandvik seal kit spare part used in the HYDRAULIC MOTOR (OMSS 100) assembly of the Sandvik DS411-C. Verified compatible with 10 Sandvik machine models including COMMANDO 120 RF, COMMANDO 120R, COMMANDO DC125R. Used in 2 drifter configurations (HE300, RD314). 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: 86539599, 865 395 99, 865-395-99.
Compatible machines
10
Drifter configurations
2
OEM cross-reference
865 395 99
About Sandvik 865 395 99 SEAL KIT
This sealing component prevents hydraulic fluid leakage and contamination ingress in the Sandvik DS411-C hydraulic system. Located within the HYDRAULIC MOTOR (OMSS 100), 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 DS411-C (DS411-C). 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.





