Sandvik / Tamrock
522 037 40 O-RING
Rock Drill Spare Part
| Part Number | 522 037 40 |
| Description | O-RING |
| Brand | Sandvik (Tamrock) |
| Assembly | HYDRAULIC ROCK DRILL HL300 |
| Type | Rock Drill Spare Part |
Quick answer
522 037 40 (also written 52203740, 522-037-40, or 522.037.40) is a Sandvik o-ring spare part used in the HYDRAULIC ROCK DRILL HL300 assembly of the Sandvik DD321-40. Verified compatible with 21 Sandvik machine models including COMMANDO 300, COMMANDO DC300Ri, DC301R. Used in 3 drifter configurations (HE300, HL300, HL300S). 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: 52203740, 522 037 40, 522-037-40.
Compatible machines
21
Drifter configurations
3
OEM cross-reference
522 037 40
About Sandvik 522 037 40 O-RING
A precision-molded sealing element for the Sandvik DD321-40, this O-ring is used in the HYDRAULIC ROCK DRILL HL300 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 DD321-40 (DD321-40). 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.
