Sandvik / Tamrock
AF 250 105 18a O-Ring
DD321-40
| Part Number | AF 250 105 18a |
| Description | O-Ring |
| Brand | Sandvik (Tamrock) |
| Assembly | Compressor Assembly |
| Type | Drill Rig Spare Part |
Quick answer
AF 250 105 18a (also written AF25010518a, AF-250-105-18a, or AF.250.105.18a) is a Sandvik o-ring spare part used in the Compressor Assembly assembly of the Sandvik DD321-40. Verified compatible with 10 Sandvik machine models including COMMANDO DC300Ri, 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: AF25010518a, AF 250 105 18a, AF-250-105-18a.
Compatible machines
10
OEM cross-reference
AF 250 105 18a
About Sandvik AF 250 105 18a O-Ring
A precision-molded sealing element for the Sandvik DD321-40, this O-ring is used in the Compressor Assembly 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.
