Spring energized seals are high-performance sealing elements designed for extreme operating environments where both conventional rubber seals and metal gaskets fall short. With a metal energizer spring inside a PTFE (or modified polymer)/UPE/PEEK U-shaped jacket, these seals provide consistent contact pressure, excellent media compatibility, and long-term reliability.
They are particularly suitable for dispensing machine, precision equipment, micro-stroke pistons, high- or low-speed systems, and severe vibration conditions.
Technical Information
Temperature Range: -250°C to +316°C
Working Pressure:
Static up to 350 MPa
Dynamic up to 55 MPa
Speed: Up to 5 m/s (rotary or reciprocating)
Media: Oils, water, gases, chemicals, cryogenic fluids, solvents, and vacuum
Diameter range: 3 mm to 1600 mm
Motion types:
- Rotary
- Reciprocating
- Oscillating
- Static
Product Features
Ultra-wide temperature range: -250°C to +316°C
Chemical resistance: Compatible with almost all media except soluble alkali metals, high-temp fluorine, and chlorine trifluoride
Low friction coefficient: Ideal for dry running or poor lubrication
No stick-slip effect: Suitable for precision dispensing equipment
Excellent wear resistance & long service life
Suitable for extreme dynamic conditions: high-speed, low-speed, micro-stroke reciprocation
Handles severe vibration & eccentricity
Available in diameters from 3 mm to 1600 mm
Works in vacuum and ultra-high vacuum (UHV) systems
Unlimited shelf life
Working Principles
The U-shaped PTFE jackets of spring energized seals house a precision energizer spring—ribbon, helical, cantilever (V-spring), U-shaped, or advanced pitch coil design.
The spring ensures continuous radial or axial sealing force by:
Compensating for wear of the sealing lip
Adapting to slight eccentricity of mating surfaces
Maintaining consistent sealing performance under temperature fluctuations
Supporting operation with or without lubrication
Applications
Spring energized seals are ideal for:
Dispensing machine
High-speed rotating systems
Low-speed or micro-stroke piston systems
Cryogenic equipment
Semiconductor production
Compressors & vacuum pumps
Food and pharmaceutical machinery
Hydraulic & pneumatic cylinders
Aerospace and defense systems
Chemical processing equipment
Medical devices
Jacket Material Options
| Material | Description | Wear Resistance (1-9) | Temperature Range |
| PTFE Virgin | Low–moderate dynamic/static service. Low gas permeability. FDA approved. Excellent cryogenic properties. | 3 | -250°C to +205°C |
| PTFE Virgin Modified | Lowest permeability. Improved creep resistance. Very high chemical resistance. FDA approved. | 3 | -250°C to +215°C |
| PTFE + Carbon & Graphite | Excellent wear & high-temp capability; ideal for steam, hot water, poor lubrication. | 8 | -130°C to +290°C |
| PTFE + Graphite | Low friction, excellent general-purpose, non-abrasive. Good for water/dry running. | 7 | -130°C to +290°C |
| PTFE + Glass Fiber + MoS₂ | Extremely wear resistant; suitable for high pressure, hydraulic, water & steam. | 9 | -155°C to +290°C |
| PTFE Special Filler | Superior heat & wear resistance; suitable for high speeds, high temperature. | 8 | -155°C to +316°C |
| UHMW-PE Modified | Excellent wear resistance. FDA approved. For abrasive and water-based media. | 9 | -240°C to +104°C |
| PEEK | Exceptional mechanical strength and stability; excellent wear resistance; ideal for high-load, high-temperature, and high-pressure environments. Outstanding chemical resistance. | 9 | -70°C to +260°C |
Energizer Spring Materials
| Material | ISO Alloy Code |
| 301 Stainless Steel | 1.431 |
| 304 Stainless Steel | 1.4301 |
| 316 Stainless Steel | 1.4401 |
| Elgiloy | 2.4711 |
| Inconel | 2.4669 |
| Hastelloy | 2.4602 |
Typical Spring Seal Designs
Helical spring seal
Ribbon spring seal
Cantilever (V-shaped) spring seal
U-shaped spring design
Advanced pitch coil spring
Variseal-type designs
Each design is optimized for specific load, pressure, friction, and environmental conditions.
Why Choose Our Spring Energized Seals
- Over 15 years manufacturing sealing components
- ISO-grade quality control
- Full OEM and customized production
- Small samples available
- Professional support for dispensing machines and high-precision equipment
- Competitive pricing compared with European/American suppliers
FAQ
Q1: Can these seals be used for dispensing machines?
Yes, the low friction, no stick-slip, and precision sealing performance make them ideal.
Q2: Can they run without lubrication?
Yes. Many PTFE-based materials operate dry with minimal friction.
Q3: Can you make custom sizes?
Yes, diameters from 3 mm to 1600 mm can be produced.
Q4: Do they work at cryogenic temperatures?
Yes, down to -250°C.
Q5: What media are they not compatible with?
Soluble alkali metals, high-temperature fluorine, and chlorine trifluoride.
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