Rotary Seals
Rotary seals are used in applications with oscillating or rotating movements in order to retain liquid lubricants and to prevent the penetration of dirt and water. These seals help to extend the service life of parts and to enhance the long-term performance.
Producers of rotary transmissions prefer simplified seal designs. This can be achieved by means of internally sealing rotary sealing set profile Y1. They consist of wear resistant glide rings of low friction and of NBR or FKM O-rings as energizer. The rotary sealing set profile Y1 is suitable mainly for applications where the pressure alternates from one side of the seal to the other, such as pivots for rotating track rings, swivel joints, hose reels, and in machine tool hydraulics. If the sealing set is used as an end seal, it is recommended to install a wiper ring at the end of the components.
NewDealSeals supplies a wide range of rotary seals as an economic alternative to for instance Roto Glyd Ring® and Rotomatic®.
Advantages Rotary Seal
- Minimal break-out and dynamic slide friction. Therefore no stick-slip. Steady movement is guaranteed even at low velocities
- Low wear
- High extrusion resistance
- High temperature resistance
- Compatibility with nearly all media due to the high chemical resistance of the rod sealing ring, and a wide selection of O-ring compounds
- Available in diameters up to 1500 mm
Extra info
Please apply this seal only in combination with closed guiding elements.
Standard compounds and range
Technical Specifications
Movement type
Rotary
Working pressure
≤ 300 bar
Working temperature
standard:-30 to +108°C
with FKM O-ring:-25 to +204°C
Surface speed:
≤ 1,0 m/s
Standard sealing ring compounds
NDS-225, PTFE + 25% carbon
Standard materials O-ring
NBR, FKM, FFKM
Profiles Rotary Seals
PROFILE Y1
Considering the special working conditions, the rotary sealing set profile Y1 is equipped with one or two circumferential lubricating grooves.
PTFE COMPOUNDS
| Color | Temperature | Application | Information | |
|---|---|---|---|---|
| NDS-100 PTFE-virgin |
White | -190 to +230 °C | Chemical Industry, Food Industry | High chemical resistance Datasheet |
| NDS-123 PTFE +15% glass, +5% molybdenum disulfide |
Grey | -190 to +290 °C | Medium-duty |
High chemical resistance, High creep resistance, Electrical properties like virgin PTFE
|
| NDS-225 PTFE +25% carbon |
Black | -190 to +315 °C | Pneumatics Rotary sealing | High wear and creep resistance Datasheet |
| NDS-235 PTFE +10% carbon fibre |
Black | -260 to +310 °C | Water hydraulics, Seawater, Short strokes with high frequency | Very good wear properties Datasheet |
| NDS-415 PTFE +15% graphite |
Antrachite | -190 to +230 °C | Low mechanical stress, Soft sealing Surfaces | Chemical resistance |
| NDS-555 PTFE + mineral fibers |
Antrachite | -200 to +260 °C | Medium and heavy mechanical stress, Hydraulic applications | Chemical, wear and creep resistance Datasheet |
| NDS-640 PTFE +40% bronze |
Bronze | -156 to +260 °C | Medium and heavy mechanical stress, Hydraulic applications |
Outstanding wear and creep resistance
|
| NDS-660 PTFE +60% bronze |
Bronze | -156 to +260 °C | Heavy mechanical stress, Hydraulic applications | Outstanding wear and creep resistance |
| NDS-750 PTFE + polyimide |
Tan | -260 to +310 °C | High speed rotating applications | Use against soft metals |
Related PTFE Seals
Back-up Rings
Back-up rings are used for static and dynamic applications in connection with O-rings, to prevent extrusion of the O-ring into the diametrical clearance.
Rotary Seals
Rotary seals are used in applications with oscillating or rotating movements in order to retain liquid lubricants and to prevent the penetration of dirt and water.
Spring Energized Seals
The Synering® system is an advanced sealing concept designed to meet extreme demands regarding temperature, medium, etc. which cannot be covered by conventional sealing compounds.
CONTACT FORM
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NewDealSeals B.V.
+31 (0) 226 362 233
Boezemschop 8, 1724 BJ Oudkarspel, The Netherlands