Rotary Seals at NewDealSeals
Rotary seals are unsung heroes in the world of mechanical precision, tirelessly working in applications with oscillating or rotating movements. Their mission is crystal clear: retain vital liquid lubricants and shield against the relentless invasion of dirt and water. On this page, we’ll explore the invaluable role of rotary seals, from extending the service life of crucial parts to enhancing long-term performance.
What Are Rotary Seals?
Rotary seals are essential components used in various mechanical applications involving oscillating or rotating movements. Their primary function is to retain liquid lubricants within a system while effectively preventing the infiltration of contaminants such as dirt and water. By performing this crucial role, rotary seals contribute significantly to extending the service life of mechanical parts and enhancing long-term performance.
Advantages of Rotary Seals
Rotary seals are the unsung champions of mechanical engineering, and their advantages are instrumental in ensuring the precision and reliability of machinery and equipment.
1. Minimal Break-Out and Dynamic Slide Friction: Rotary seals are engineered to minimize break-out and dynamic slide friction. This ingenious design ensures the elimination of stick-slip, guaranteeing steady movement even at low velocities. This is particularly crucial for applications demanding precision and consistency.
2. Low Wear: These seals boast low wear characteristics, contributing to the extended lifespan of mechanical components. Reduced wear translates to fewer maintenance requirements, ultimately saving time and resources.
3. High Extrusion Resistance: Rotary seals are renowned for their exceptional extrusion resistance. They stand strong against the challenging conditions within mechanical systems, maintaining their sealing integrity under pressure.
4. High Temperature Resistance: Engineered to withstand high temperatures, rotary seals maintain their effectiveness even in environments prone to temperature fluctuations. This resilience ensures the reliability of machinery in diverse operating conditions.
5. Chemical Compatibility: Rotary seals exhibit remarkable chemical resistance, allowing them to be compatible with a wide range of media. This versatility is further enhanced by a comprehensive selection of O-ring compounds, making them adaptable to various sealing needs.
6. Large Diameter Options: Rotary seals are available in sizes with diameters of up to 1500 mm, making them suitable for a wide array of mechanical applications, including large-scale industrial machinery.
*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 Datasheet |
| 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-430 PTFE + 23% carbon + 2% graphite |
Black | -100 to +250 °C | Medium-duty, cold creep, thermal conductivity | Chemical and wear resistance Datasheet |
| 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
Rotary Seals
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NewDealSeals B.V.
+31 (0) 226 362 233
Boezemschop 8, Breekland, 1724 BJ Oudkarspel, The Netherlands