B21-P
Product Name
B21-P
Classification
Piston Rod Seal
Certification
ISO 9001, FDA, RoHS
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.
Symmetric rod seal preloaded by O-ring with sharp sealing lip; good for high-viscosity media, not advised for new applications (B03-P profile recommended).
| 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%) | ||
| Recommended Dimensions (mm) | Maximum Radial Extrusion Gap (mm) | ||||||||
| d | D | G | Rmax | c | s* | ||||
| f8 | H10 | +0.2 | 20 bar | 100 bar | 200 bar | 400 bar | |||
| Range (mm) | |||||||||
| 5 | 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 | 600 | d+30 | 25,0 | 0,4 | 10,0 | 0,67 | 0,52 | 0,45 | 0,39 |
| The extrusion clearance values shown in the table are valid for temperatures under 70°C. Lower clearances shall be used at higher 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.