D11
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.
Active Backup Ring Specialized for PD-Type Piston Seals It is generally integrated into the profile of PD-type seals and features a pressure self-actuated design. Split and non-split constructions are both available.
| Surface Roughness | TPU | PTFE | ||
| Rtmax | Ra | Rtmax | Ra | |
| Sliding Surface | ≤ 2.5μm | ≤ 0.1–0.5μm | ≤ 2μm | 0.05 - 0.3μm |
| Groove Bottom | ≤ 6.3μm | ≤ 1.6μm | ≤ 6.3μm | ≤ 1.6μm |
| Groove Side | ≤ 15μm | ≤ 3μm | ≤ 15μm | ≤ 3μm |
| Bearing area: 50-95% and cutting depth of 0.5 Rz (based on Cref = 0%) | ||||
| Recommended Dimensions (mm) |
| Minimum nominal inner diameter d ≥ 4.5 mm. Profile dimensions, surface specifications and tolerances are determined by the specific sealing material combination for the relevant application. Standard version: cutting gap = 0, cutting angle = 45°. |
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.