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How are Spring Energized Seals used in Rotary Applications?
There are many types of dynamics in the sealing world and seals are designed to adapt to different working conditions. From simple O Ring for static applications to hydraulic rubber seals for reciprocating purposes and rotary seals for more extreme operating conditions. Rotary motions require complex sealing designs and consideration as the stress concentration in a specific contact area where localized heat, wear and friction can easily accelerate the wear of the seals. Parjet’s HiPerSeal®, spring energizes seals, also known as Teflon spring seals or rotary spring seals, are designed to withstand high pressure under rotary applications. Using HiPerSeal in rotary motion applications offers several benefits, making them a popular choice for various industries.
Flexibility to Dynamic Conditions:
HiPerSeal®, Spring energized seals are designed to maintain effective sealing even in dynamic conditions with rotary motion. The wide range of the energizing spring selection ensures the component functions effectively under different dynamics. The energizing springs provide continuous contact with the mating surface, accommodating variations in pressure, temperature, and surface irregularities. Additionally, seal jackets can easily be modified based on the environment, working conditions, springs and other material requirements.
Types of energizing springs includes:
Canted Coil Springs: Helical Springs: Cantilever Springs:
- • Friction sensitive applications • Static radial and face sealing • Reciprocating radial and face sealing
- • Reciprocating radial and face sealing • High pressure environment • Slow speed rotary dynamic application
- • Moderate speed rotary application • Reciprocating or slow speed rotary application • Dynamic application up to 260 °C (500 °F)
Each spring can be customized for different applications.
Long service life due to the several factors:
Wide Operating Temperature Range:
HiPerSeal® can operate effectively across a broad temperature range, from extremely low temperatures to high-temperature environments. The material of the seal jacket is customized based on the operating temperature. PTFE Fillers like PEEK can help to withstand a higher temperature. The choice of materials, particularly PTFE, contributes to their thermal stability.
Chemical Resistance:
The material of the seal jacket is typically made with PTFE pound that can withstand exposure to various chemicals without degradation, making them suitable for applications where exposure to corrosive substances is a concern.
Low coefficient of friction and self - lubrication characteristics:
PTFE has a low friction property which reduces the wear rate of the seals and extend its service life expectancy. This contributes to efficient sealing under rotary motion when the pressure is high. Additionally, even under dry environment, HiPerSeal® can operate effectively due to their non-stick properties.
Reduced Downtime and Maintenance:
The robust design and long service life of spring energized seals contribute to reduced downtime and maintenance requirements. It provides a cost effective solution for various sealing demand. This is particularly advantageous in critical applications where operational continuity is crucial.
Examples of HiPerSeal Rotary Applications:
- Oil & Gas: Pumps, valves and compressors
- Chemical Processing: Rotary equipment for mixing, pumping and conveying fluids
- Pharmaceuticals: Rotary machines for mixing, granulation and tablet pressing
- Automotive: Shafts, bearings, gear assemblies
- Marine and Shipbuilding: Ship propulsion systems, marine pumps
- Food and Beverage: Rotating component for mixing, pumping, conveying, transporting
- Medical Devices: pumps, diagnostic equipment, variety of medical devices
- Pulp and Paper: Pumps, agitators and rollers
Parjet Engineering Team
Choosing and designing the right seals for rotary application can be tricky as many things need to be taken into consideration. Spring energized seals with their flexible customization design, and outstanding material characteristics, it is a great component to provide an effective sealing under any dynamic motions.
Parjet has an experienced engineering team that specializes in rotary sealing components. We are able to identify, design and manufacture different sealing needs. All seals can be customized based on client’s working conditions. With Parjet’s technical technology on advance sealing solutions, we can solve complex sealing problems for you.
If you would like to make any inquiries on HiPerSeal®, contact us here.