B02-PD
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.
This asymmetric rod seal features the same base profile as Model B01-P. Equipped with an active anti-extrusion back-up ring, it can withstand larger extrusion clearances or higher pressure ranges. Model B02-PD is suitable for standard gland designs.
| Surface Roughness | Rtmax | Ra |
| Sliding Surface | ≤ 2.5μm | ≤ 0.05-0.3μm |
| 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%) | ||
| Recommended Dimensions | Maximum Radial Extrusion Gap | ||||||||
| d | D | G | Rmax | C | s* | ||||
| f8 | H10 | +0.2 | 20 bar | 100 bar | 200 bar | 400 bar | |||
| Range (mm) | |||||||||
| 11 | 25 | d+8 | 6.3 | 0.4 | 3.5 | 0.33 | 0.17 | 0.11 | 0.05 |
| 25 | 50 | d+10 | 8.0 | 0.4 | 4.0 | 0.37 | 0.22 | 0.16 | 0.10 |
| 50 | 150 | d+15 | 10.0 | 0.4 | 5.0 | 0.46 | 0.31 | 0.25 | 0.19 |
| 150 | 300 | d+20 | 14.0 | 0.4 | 6.0 | 0.54 | 0.39 | 0.32 | 0.26 |
| 300 | 500 | d+25 | 17.0 | 0.4 | 8.5 | 0.61 | 0.46 | 0.39 | 0.33 |
| 500 | 700 | d+30 | 25.0 | 0.4 | 10.0 | 0.67 | 0.52 | 0.45 | 0.39 |
| 700 | — | d+40 | 32.0 | 0.4 | 13.0 | 0.67 | 0.52 | 0.45 | 0.39 |
| The above extrusion clearances apply at 70°C operating temperature; reduced clearances are required for elevated temperatures. | |||||||||
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.