PTFE Seals-type PD
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).
A PTFE sealing ring energized by an O-ring is designed for bi-directional pressurization, pneumatic pistons, such as in control cylinders, in quick acting cylinders, and servo-assisted equipment. It is dedicated for assembly on an integral piston to serve as a high extrusion resistance but very low sliding friction sealing in pneumatic applications.
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Features:
- Application Range
- Pressure:≤16 bar
- Temperature:-40 ~ 200° C
- Speed:≤4 m/s
- Standard Material:Carbon filled PTFE
- Other materials are available for specified conditions
| Diameter | Groove Bottom | Groove Width (L) for no. of Back-up Rings | Radius | O-ring code |
|---|---|---|---|---|
| yDa | yDi | L | R | O-ring code |
| 7 - 15.9 | Di + 4.0 | 2.00 | ≤0.3 | A |
| 16 - 27.9 | Di + 6.0 | 2.85 | ≤0.3 | B |
| 28 - 49.9 | Di + 7.5 | 3.80 | ≤0.5 | C |
| 50 - 129.9 | Di + 12.5 | 5.60 | ≤0.5 | D |
| 130 - 199.9 | Di + 15.0 | 7.55 | ≤0.5 | E |
| 200 - 250.0 | Di + 18.0 | 7.55 | ≤0.5 | F |
Main Products:
PTFE Seal, Spring Energized Seals, Hydraulic Seals, Pneumatic Seals, Parker Seal, High Pressure Seals, Rotary Seals, Hiper Seal