A35-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.
Compact piston seal with a nearly dead-space-free design, meeting application requirements for the food and pharmaceutical industries. It is also widely used as an alternative to O-rings, since the interference fit on its outer diameter prevents twisting during dynamic operation.
| Surface Roughness | Rtmax | Ra |
| Sliding Surface | ≤ 2.5μm | ≤ 0.05-0.2μm |
| 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%) | ||
| Standard Dimensions | Maximum Radial Extrusion Gap | |||||||
| D | d | G | Rₘₐₓ | c | s* | |||
| H9 | h10 | +0.2 | 100 bar | 200 bar | 400 bar | |||
| Range (mm) | ||||||||
| 10 | 20 | D-5 | 4 | 0.4 | 2 | 0.16 | 0.08 | 0.03 |
| 20 | 40 | D-6 | 4.5 | 0.4 | 3 | 0.18 | 0.10 | 0.05 |
| 40 | 60 | D-8 | 5.5 | 0.4 | 3.5 | 0.18 | 0.10 | 0.05 |
| 60 | 100 | D-10 | 6.5 | 0.4 | 4 | 0.23 | 0.15 | 0.10 |
| 100 | 150 | D-15 | 9.5 | 0.4 | 5 | 0.33 | 0.25 | 0.18 |
| 150 | 300 | D-20 | 12.5 | 0.4 | 6 | 0.38 | 0.33 | 0.25 |
| 300 | 500 | D-25 | 15 | 0.4 | 8.5 | 0.45 | 0.40 | 0.33 |
| 500 | 700 | D-30 | 17.5 | 0.4 | 10 | 0.50 | 0.45 | 0.40 |
| 700 | — | D-40 | 22 | 0.4 | 13 | 0.65 | 0.63 | 0.55 |
| * The extrusion gap values listed above are valid at 70°C. Smaller gap values shall be adopted for higher operating 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.