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Helical Spring Seals

High-load spring energized seals for static and low-speed dynamic sealing applications

Hansealing manufactures custom helical spring seals using in-house spring energizers and application-specific polymer jackets. Seal geometry, spring design and materials can be configured to suit static, vacuum, gas and other demanding sealing requirements.

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This seal is designed for static sealing applications using a spring-energized PTFE sealing element. It is widely used in systems handling gases, refrigerants, and vacuum environments where leakage control is critical. The spring provides continuous preload to compensate for material creep and temperature variation, ensuring long-term sealing stability. It is especially suitable for vacuum equipment, analytical instruments, and clean systems where elastomer seals cannot maintain reliable performance.

This seal features an internally oriented sealing profile, designed to enhance sealing performance under internal pressure conditions. It is suitable for static sealing of gases, refrigerants, and vacuum systems.

The geometry ensures that system pressure assists the sealing force, improving contact stability and minimizing leakage. It is commonly used in precision equipment where controlled sealing under internal pressure is required.

Designed with an outward-facing sealing profile, this piston seal is optimized for external pressure sealing applications. It is suitable for static sealing in gas, refrigerant, and vacuum environments.

The structure allows external pressure to reinforce the sealing contact, improving reliability and resistance to leakage. It is widely used in systems where pressure is applied from the outside of the sealing interface.

This seal incorporates an external scraping edge designed to remove contaminants from the bore surface during operation. It is particularly suitable for filling and dosing equipment where cleanliness of the internal pipeline is critical.

By preventing particles, residues, or media buildup from entering the sealing interface, it improves system reliability and extends the service life of internal sealing components.

This seal is designed with an internal scraping lip to clean the shaft surface during operation. It effectively removes dirt, moisture, and residual media from the rod.

It is commonly used in equipment exposed to external contamination, where protecting internal seals is essential. The design reduces wear, prevents ingress, and ensures long-term sealing stability.

This seal features a reinforced internal face sealing structure designed for high-pressure environments up to 70 MPa (10,000 psi).

It is suitable for systems where pressure acts from the internal side, requiring enhanced resistance to deformation and extrusion. The design ensures stable sealing performance in high-pressure fluid control and industrial processing applications.

Designed with an externally reinforced face sealing geometry, this seal is suitable for high-pressure applications up to 70 MPa.

It is used in systems where pressure is applied externally, requiring a robust structure to maintain sealing contact. The design improves stability under fluctuating pressure conditions and reduces the risk of leakage.

This seal is engineered for ultra-high pressure environments up to 120 MPa (17,000 psi), with an internally reinforced face sealing structure.

It is used in extreme applications such as oil & gas systems and high-pressure equipment. The design minimizes extrusion and deformation, ensuring sealing integrity under severe pressure loads.

Designed for ultra-high pressure external sealing conditions, this seal provides reliable performance up to 120 MPa.

It is suitable for critical systems where external pressure dominates and sealing failure is not acceptable. The reinforced geometry ensures durability and consistent sealing performance under extreme loads.

This seal is designed for rotary shaft applications with pressure capability up to 20 MPa. It combines low friction with stable sealing performance under continuous rotation.

It is widely used in pumps, motors, and rotating equipment where wear resistance and sealing reliability are critical. The design reduces frictional heat while maintaining effective sealing contact.

This seal is engineered for applications involving both rotary and reciprocating motion. It maintains stable sealing performance under complex movement conditions.

It is suitable for equipment where shafts undergo simultaneous rotation and linear movement. The design reduces wear caused by multi-directional motion and ensures consistent sealing over time.

This seal is manufactured from FDA-compliant filled PTFE materials, designed for hygienic applications in food, medical, and pharmaceutical industries.

It provides excellent chemical resistance, cleanability, and compliance with strict sanitary standards. The design is suitable for environments requiring high purity and contamination control.

This seal features a specialized lip profile combined with an independent O-ring energizer, designed to provide stable elastic preload in applications where axial movement or lifting may occur.

It is commonly used in valve systems where the shaft may experience controlled axial displacement. Under pressure, the design prevents the sealing lip from lifting, flipping, or losing contact with the sealing surface, ensuring continuous sealing performance and system reliability.