Sandvik / Tamrock
690 165 28 O-Ring
DT821-C
| Part Number | 690 165 28 |
| Description | O-Ring |
| Brand | Sandvik (Tamrock) |
| Assembly | Regulating Valve Assembly, Pressure |
| Type | Drill Rig Spare Part |
Quick answer
690 165 28 (also written 69016528, 690-165-28, or 690.165.28) is a Sandvik o-ring spare part used in the Regulating Valve Assembly, Pressure assembly of the Sandvik DT821-C. Verified compatible with 5 Sandvik machine models including DS511-C, DT1132i, DT1330i. 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: 69016528, 690 165 28, 690-165-28.
Compatible machines
5
OEM cross-reference
690 165 28
About Sandvik 690 165 28 O-Ring
A precision-molded sealing element for the Sandvik DT821-C, this O-ring is used in the Regulating Valve Assembly, Pressure to create a reliable static or dynamic seal. Even minor O-ring deterioration can lead to system pressure loss, so scheduled replacement during routine maintenance is strongly recommended.
This is an OEM-compatible aftermarket replacement part for the Sandvik DT821-C (DT821-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
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.
