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OEM Spring Energized Seals: Custom Profiles, Material Selection and Inquiry Data
Quick Answer: An OEM spring energized seal is a sealing element that combines a polymer jacket with an internal spring. The spring maintains lip load in low pressure, temperature cycling, rotary, reciprocating and static service. CORASEALS supplies OEM spring energized seals based on customer drawings, samples, materials, groove dimensions and operating conditions.
What Is an OEM Spring Energized Seal?
An OEM spring energized seal is designed for a specific original equipment application. The seal body is normally a machined polymer jacket. The jacket contains a spring energizer. The spring keeps the jacket lip in contact with the rod, bore or flange face. The spring function is useful when an O-ring or a simple lip seal may lose contact force.
The term OEM means the seal is supplied to equipment builders or as a dimensionally controlled replacement. CORASEALS does not quote only by a type code. We review the cross section, groove dimensions, material and operating conditions before offering a replacement or custom design.
For non-spring profiles, compare our machined seals and custom sealing components.
Jacket Materials for OEM Spring Energized Seals
Jacket material selection depends on the fluid, operating temperature, friction requirement and hardware surface condition. Common jacket materials include:
- PTFE for broad chemical compatibility and low friction.
- Filled PTFE for improved wear resistance and deformation control.
- UHMWPE for wear resistance in selected clean or low temperature applications.
- PEEK for higher strength and wear resistance when the application conditions allow it.
| Component | Material Options | Common Selection Reason |
|---|---|---|
| Jacket | PTFE, filled PTFE, UHMWPE, PEEK | Chemical compatibility, friction control, wear resistance |
| Spring | Stainless steel, nickel alloy, cobalt based alloy | Corrosion resistance, temperature response, load retention |
| Backup ring | Metal or plastic depending on design | Groove support, extrusion resistance, installation control |
Do not select the jacket material by seal code alone. CORASEALS confirms the material grade and filler type against the actual fluid and operating temperature.
Spring Materials and Spring Types
The spring energizer supplies the load that keeps the jacket lip in contact. Common spring materials include stainless steel, nickel alloy and cobalt based alloy. Spring material selection depends on temperature, fluid corrosion risk and the load response required by the seal profile.
Spring design varies. Some profiles use a canted coil spring. Other profiles use a helical spring or a cantilever spring. Each spring type has a different load response. The spring must match the jacket profile and groove design.
For aggressive chemical or high temperature service, the jacket and spring must be selected together. A chemical resistant jacket does not help if the spring material corrodes.
OEM Applications for Spring Energized Seals
Equipment builders and maintenance teams use spring energized seals where a standard seal cannot keep controlled lip contact. Common application areas include:
- Valve stems and rotary valve shafts.
- Centrifugal pumps, metering pumps and rotary unions.
- Mixers, reactors and agitator shafts.
- Chemical injection and fluid handling equipment.
- Compressors and gas handling systems.
- Food, beverage and pharmaceutical equipment when material compliance is confirmed.
OEM spring energized seals can b