A21-P
TvnSeal Engineering Plastics Technology Co., Ltd. is a national high-tech enterprise specializing in the R&D and manufacturing of high-performance sealing materials and special polymer new materials.
O-ring preloaded symmetric rod seal with sharp sealing lips. It provides effective sealing for high-viscosity fluids. Not recommended for new designs (Profile B03-P is preferred).
| Surface Roughness | Rtmax | Ra |
| Sliding Surface | ≤ 2.5μm | ≤ 0.1-0.5μm |
| Groove Bottom | ≤ 6.3μm | ≤ 1.6μm |
| Groove End Face | ≤ 15μm | ≤ 3μm |
| Additional Notes: Support Rate: 50-95%, Cutting Depth 0.5R (based on the reference condition of Cref=0%) | ||
| D | d | G | Rₘₐₓ | C | s* | ||||
| H9 | h10 | +0.2 | 20 bar | 100 bar | 200 bar | 400 bar | |||
| Range (mm) | |||||||||
| 13 | 25 | D-8 | 6.0 | 0.4 | 3.5 | 0.33 | 0.18 | 0.11 | 0.05 |
| 25 | 50 | D-10 | 7.0 | 0.4 | 4.0 | 0.37 | 0.22 | 0.16 | 0.10 |
| 50 | 75 | D-12 | 8.0 | 0.4 | 4.5 | 0.42 | 0.27 | 0.20 | 0.14 |
| 75 | 150 | D-15 | 10.0 | 0.4 | 5.0 | 0.46 | 0.31 | 0.25 | 0.19 |
| 150 | 300 | D-20 | 12.0 | 0.4 | 6.0 | 0.54 | 0.39 | 0.32 | 0.26 |
| 300 | 500 | D-25 | 18.0 | 0.4 | 8.5 | 0.61 | 0.46 | 0.39 | 0.33 |
| 500 | 600 | D-30 | 20.0 | 0.4 | 10.0 | 0.67 | 0.52 | 0.45 | 0.39 |
| * The extrusion gap values shown above are valid at 70°C; if the operating temperature is higher, smaller gap values shall be adopted. | |||||||||
Applications
Chemical Industry
Used in pumps, valves, and piping systems for chemical processing plants.
Pharmaceutical
FDA-compliant seals for drug manufacturing and processing equipment.
Food Processing
Sealing solutions for food and beverage processing machinery.
Oil & Gas
High-pressure seals for oil drilling and refining equipment.
Automotive
Engine and transmission seals for automotive applications.
Aerospace
Precision seals for aerospace and aviation equipment.