Form
Cylinders & Blocks
Cylindrical and rectangular blanks in a wide range of standard sizes — custom dimensions and profiles available on request.
Industrial-grade carbon and graphite blanks for downstream machining, component manufacturing, and OEM supply programs.
We supply fine-grain and medium-grain graphite blanks engineered for machining into piston rings, mechanical seal faces, packing sets, and other sealing components. Available in cylinders and rectangular blocks across a wide dimension range, with optional resin or antimony impregnation for enhanced gas-tightness and wear resistance.
Cylindrical and rectangular blanks in a wide range of standard sizes — custom dimensions and profiles available on request.
Fine-grain for tight-tolerance seal faces; medium-grain for packing rings and general-purpose sealing — all with consistent density.
Tell us your medium, pressure, temperature, and speed — we will recommend the optimal grain size and impregnation method.
The following reference values are provided for standard graphite sealing material blank grades. They can be used for preliminary grade screening before final selection is confirmed against the actual medium, temperature, pressure, speed, and machining route.
| Grade | Bulk Density (g/cm³) | Shore Hardness | Flexural Strength (MPa) | Compressive Strength (MPa) | Open Porosity (%) |
|---|---|---|---|---|---|
| M154 | ≥ 1.50 | ≥ 40 | ≥ 12 | ≥ 30 | ≤ 32 |
| M141 | ≥ 1.55 | ≥ 45 | ≥ 18 | ≥ 45 | ≤ 28 |
| M120 | ≥ 1.65 | ≥ 60 | ≥ 26 | ≥ 62 | ≤ 24 |
| M116 | ≥ 1.65 | ≥ 50 | ≥ 28 | ≥ 68 | ≤ 23 |
| M106 | ≥ 1.65 | ≥ 60 | ≥ 31 | ≥ 72 | ≤ 23 |
| M117 | ≥ 1.65 | ≥ 60 | ≥ 35 | ≥ 80 | ≤ 23 |
Include the details below and our engineering team will recommend the optimal grade, provide unit pricing, and confirm lead time within one business day.