PTFE Seals-type PB
Seal sets of type RO and PO can be used in hydraulic applications in place of dynamically stressed O-rings. Existing grooves can be used as fitting area if they conform to the US standard AS 568A.
These seal sets enable the dynamic behavior to be improved, as a result of which higher gliding speeds, smoother running properties and higher wear resistance are attained. PTFE Glide Seal sets can also be used in O-ring fitting areas designed for one or two back-up rings.
Care must be taken in the design to ensure that the groove width L is selected according to the number of back-up rings. The standard material combination is modified PTFE and NBR (O-ring).
Single seal is designed for uni-directional pressurization pistons in hydraulic applications but it is also appropriate for double-acting pistons in hydraulic cylinders if two sealing sets are arranged. Typical applications include control cylinders, servo-controlled systems, machine tools, and construction machinery.
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Features:
- Application Range
- Pressure:≤400 bar
- Temperature:-40 ~ 200° C
- Speed:≤4 m/s
- Standard Material:Bronze filled PTFE
- Other materials are available for specified conditions
| Cylinder Bore | Groove Bottom | Groove Width (L) for no. of Back-up Rings | Radius | O-ring code |
|---|---|---|---|---|
| yDi | yDa | L | R | O-ring code |
| 8 - 16.9 | Di + 4.9 | 2.2 | ≤0.3 | A |
| 17 - 26.9 | Di + 7.3 | 3.2 | ≤0.5 | B |
| 27 - 59.9 | Di + 10.7 | 4.2 | ≤0.8 | C |
| 60 - 199.9 | Di + 15.1 | 6.3 | ≤1.2 | D |
| 200 - 255.9 | Di + 20.5 | 8.1 | ≤1.5 | E |
| 256 - 50.0 | Di + 24.0 | 8.1 | ≤1.5 | F |
Main Products:
PTFE Seal, Spring Energized Seals, Hydraulic Seals, Pneumatic Seals, Parker Seal, High Pressure Seals, Rotary Seals, Hiper Seal