Hunan Chengzhai Machinery Equipment Co., Ltd.
| Fits | Sand-vik DD311, DD321, DL421 series underground rock drills |
| Material | NBR (nitrile rubber) standard; FKM upgrade available |
| Type | Single‑acting U‑cup (one‑way pressure) |
| Pressure | Up to 250 bar (max 300 bar) |
| Payment Terms | T/T |
| Temperature | −30 °C to +100 °C (NBR); up to +200 °C (FKM) |
| Delivery Time | 15days |
| Dimensions (typical) | ID ≈ 22 mm, OD ≈ 30 mm, Width ≈ 4 mm |
| Weight | ≈ 0.01 kg |
| Function | Hydraulic cylinder pressure seal (feed/rotation circuit), prevents internal leakage. |
| Supply Ability | 9999 |
| Packaging Details | Original packaging |
| Place of Origin | CHINA |
| Model Number | 87218939 |
| Brand Name | Sand-vik |
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Product Specification
| Fits | Sand-vik DD311, DD321, DL421 series underground rock drills | Material | NBR (nitrile rubber) standard; FKM upgrade available |
| Type | Single‑acting U‑cup (one‑way pressure) | Pressure | Up to 250 bar (max 300 bar) |
| Payment Terms | T/T | Temperature | −30 °C to +100 °C (NBR); up to +200 °C (FKM) |
| Delivery Time | 15days | Dimensions (typical) | ID ≈ 22 mm, OD ≈ 30 mm, Width ≈ 4 mm |
| Weight | ≈ 0.01 kg | Function | Hydraulic cylinder pressure seal (feed/rotation circuit), prevents internal leakage. |
| Supply Ability | 9999 | Packaging Details | Original packaging |
| Place of Origin | CHINA | Model Number | 87218939 |
| Brand Name | Sand-vik |
Company Details
Business Type:
Trading Company,Seller,Exporter,Importer,Distributor/Wholesaler,Manufacturer,Agent
Year Established:
2023
Total Annual:
CNY 20M-CNY 50M
Employee Number:
10~49
Ecer Certification：
Verified Supplier
Chengzai Machinery mainly operates products suitable for imported brands of road machinery, mining equipment, construction machinery, generator sets, ship power systems, etc.: drilling rig spare parts, air compressor spare parts, tunneling machine spare parts, excavator-loader spare parts, engine sp... Chengzai Machinery mainly operates products suitable for imported brands of road machinery, mining equipment, construction machinery, generator sets, ship power systems, etc.: drilling rig spare parts, air compressor spare parts, tunneling machine spare parts, excavator-loader spare parts, engine sp...
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