Complaint
Spring Energized Seal Design
A spring-energized seal consists of three main elements: a jacket, a spring and high performance plastic sealing materials. It uses a spring to provide a consistent load throughout the circumference of the seal. This way a leak-tight seal is created between the jacket, made out of high performance plastics, and the hardware. The choice of high performance plastics provides outstanding physical and mechanical characteristics.
Spring-energized seals are typically encountered in environments that place too much strain on conventional elastomeric seals: extreme temperatures and pressures, high levels of friction and wear or aggressive media are among the most common. Because the high performance plastics for spring-energized seals are machined, the seal configuration can be altered to meet to your specific needs.
1. Application and properties
Suitable for reciprocating piston rod or piston single acting seal, the working pressure has a wide range of adaptability, and the pressure capacity can be enhanced by increasing the tail length size or increasing the check ring.
Small friction coefficient, The contact pressure between the mating surface and the mating surface is low, and the friction between the work face and the mating surface is the smallest in all seal types. with or without lubrication can work, wear resistance, long service life.
The working medium of the sealing sleeve has wide adaptability, and the other chemicals are not reacted except soluble alkali metal, high temperature fluorine gas and three fluoride chloride.
The working temperature range is wide, and can be used for -200 ºC to +250 ºC.
It can be used for very high speed, very low speed, micro-stroke and other special conditions.
Suitable for aviation and industrial sealing groove size, The standard installation groove is the same size as the standard O ring, and the size is small. It can be designed as non standard parts to meet the sealing requirements of any size groove. The groove is open or semi open.
It can be used in rotary sealing. It can adapt to large eccentricity and beating.
2. Standard materials
Sealing sleeve: PTFE/PEEK/CARBON
Spring: Stainless steel 304, 316
3. Working Conditions
Working Conditions | ||||
Diameter Range | Pressure Range | Temperature Range ºC | Speed | Medium |
3 - 1600mm | 0 - 20MPa | -200 ~ +250 | 5 m/s | High and low temperature oil and water and other fluids. |
5.Spring type:
V Springs
V springs also referred to as cantilever, U or meander springs offer a light to medium load. This type of spring is intended for use in dynamic applications of rotary or linear motion and offers a relatively large amount of defection. V springs are also used in static applications where large spring defection is required i.e. a large tolerance on the groove dimensions, expansion/contraction/misalignment etc. Standard materials for V springs are stainless steel and Elgiloy®. V springs allow for an extremely fexible and wide operating range of seal. The load curve of a V spring is progressive until sudden failure and permanent deformation.
Canted Coil Springs
Canted coil springs are made from a round wire coil that is formed so the coils lay over at an angle. This results in a load/defection curve which is fat rather than progressive and very well suited to dynamic applications which are friction sensitive. Like the V spring, the canted coil spring is designed for use in dynamic applications of rotary and linear motion and static applications where a greater tolerance or defection must be accommodated. Standard materials are stainless steel and Alloy C-276.
Helical Springs
Helical springs are coil springs made from fat tape which is would into a helix shaped coil. Helical springs offer a very limited amount of defection versus a very high load displaying an instantly and dramatically progressive load/defection curve. Helical springs are intended for use in static applications or in certain circumstances they can be used for very slow or infrequent dynamic applications providing higher friction is acceptable. Helical springs are ideal for high pressure or vacuum applications where precise tolerances can be adhered to on the groove detail. Helical springs should also be the frst choice for cryogenic applications. For the most extreme service a double wall heat treated option can be supplied ensuring the maximum amount of sealing force and ductility of material at extreme cryogenic temperatures.
| Name | PTFE Stain Steel Spring Energized Seals Valve Seal |
| Sliding speed[m/s] | 15 |
| Temperature [° C] | -40...+260 For specific applications beyond indicated range, please enquire. |
| Pressure Pr: N/mm² (Max) | 45 |
| Medium | Virtually all fluids, chemicals and gases |
| Material | Virgin PTFE, PTFE+carbon, PTFE+glass fiber, PTFE+bronze, PTFE+polyester, PEEK etc. Other special material is also available. |
| Color | coffee, white, black, blue, beige |
| Type of spring | V-spring, Helical Spring, Slanted Coil Spring |
| Size | Supply standard and non-standard size |
| Advantages | 1. Resistant to most fluids and chemicals 2. Low coefficients of friction 3. Stick-slip-free operating for precise control 4. High abrasion resistance and dimensional stability 5. Can handle rapid changes in temperature 6. No contamination in contact with foodstuffs. pharmaceutical and medicinal fluids. 7. High temperature range 8. Sterilisable 9. Unlimited shelf life. |
| Application | Valves Pumps Separators Actuators Dosing devices |
| Certificates | ISO9001-2015, SGS |
Oil seal edge, elastomer The sealing lip short and soft with spring With dustproof lip Resistance to pressure oil seal, of a whole in the larger diameter used under high pressure Used for sealing pressure situations.
The inner layer is corrugated paper, and the film is shrinkable. The outer box is wrapped with film.
Delivery Terms: FOB,CFR,CIF,EXW,CIP,CPT,
Payment Currency:USD,EUR,CNY,
Payment Type: T/T,MoneyGram,Credit Card,PayPal,Western Union.
Cathy (Sales Manager)
Hebei SPT Seals Technology Co., Ltd.
