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Cantilever Spring Seal

Eclipse Cantilever Spring Seals make use of a V-shaped spring embedded in a polymer jacket. At installation, the V shape of the spring is compressed, providing sealing energy to the seal jacket ensuring a positive seal.

 

With a linear load curve and excellent deflection range, Eclipse Cantilever Spring Seals are a very versatile product. They are common replacements when rubber u-cups fail due to chemical attack, extreme temperature range, friction concerns and wear issues.

 

Cantilever Spring Seals are best suited for reciprocating applications such as shocks, hydraulic cylinders, pumps and compressors.

 

The shape of the spring concentrates load on the front of the seal, which makes this design also suitable for use as environmental excluders and for applications requiring scraping of viscous media. As an additional option, the spring cavity area can be filled with silicone for FDA clean-in-place applications.

This Cantilever Spring Seals is a single-acting internal pressure seal designed for rod applications. It consists of a U-cup polymer jacket combined with a metal cantilever spring. It is suitable for low to medium speed reciprocating motion and low-speed rotary conditions such as hydraulic and pneumatic cylinders.

The seal provides reliable performance from vacuum to 20 MPa. It performs particularly well in low-viscosity media and thermoplastic or adhesive fluids. For rotary applications, surface speed limitations should be considered.

This seal is a single-acting external pressure seal designed for piston applications. The U-cup structure combined with a cantilever spring allows for groove runout, eccentricity, and wider tolerance ranges.

The asymmetrical profile includes a robust dynamic lip on the bore side with an optimized lead angle, ensuring effective leakage control, reduced friction, and extended service life.

This seal is a single-acting symmetrical seal suitable for both rod and piston applications. It features a U-cup jacket with a cantilever spring, allowing both inner and outer lips to function as dynamic sealing lips.

This design provides balanced sealing performance, effective leakage control, reduced friction, and extended service life in dynamic applications.

This seal is a reinforced internal pressure seal designed for rod applications under higher pressure conditions. The extended base structure improves load capacity and pressure resistance.

The asymmetrical profile features a dynamic inner lip contacting the rod, ensuring reliable sealing, reduced friction, and longer service life.

This seal is a reinforced external pressure seal designed for piston applications. The extended base improves resistance to high-pressure loads.

The asymmetrical outer profile features a dynamic lip contacting the bore, providing stable sealing performance, reduced friction, and extended durability.

This seal is a reinforced symmetrical seal suitable for both rod and piston applications. The extended base structure improves pressure resistance.

Both inner and outer lips act as dynamic sealing lips, ensuring effective leakage control, reduced friction, and long service life.

Internal Pressure Anti-Extrusion Cantilever Spring Seal is a high-pressure internal sealing solution with an integrated back-up ring designed to prevent extrusion into clearance gaps.

The extended base structure improves pressure resistance, while the asymmetrical design with a dynamic inner lip ensures stable sealing performance, reduced friction, and longer service life.

Internal Pressure Anti-Extrusion Cantilever Spring Seal is a single-acting internal pressure seal designed for high-pressure dynamic applications. It features a U-cup jacket with a cantilever spring and an extended base to improve pressure resistance.

A triangular back-up ring is integrated to prevent extrusion into clearance gaps. The ring is precisely matched to groove dimensions and made from a material with higher extrusion resistance than the sealing jacket. The asymmetrical profile with a dynamic inner lip ensures reliable sealing, reduced friction, and extended service life.

Internal Pressure Anti-Extrusion Cantilever Spring Seal is a single-acting seal designed for ultra high-pressure dynamic conditions. It incorporates a trapezoidal back-up ring to prevent extrusion under extreme pressure.

The back-up ring is precisely manufactured according to groove width and uses a material with superior anti-extrusion properties. The asymmetrical design with a dynamic inner lip ensures stable sealing performance, reduced friction, and long service life.

This seal is a single-acting seal for high-pressure dynamic applications. It features a rectangular back-up ring integrated into the structure to prevent extrusion into clearance gaps.

The extended base improves pressure resistance, while the asymmetrical profile with a dynamic inner lip ensures effective sealing, reduced friction, and extended durability.

This seal is a single-acting seal designed for extreme high-pressure applications. It incorporates two matched wedge-shaped back-up rings to provide maximum extrusion resistance.

The design ensures stable sealing performance under severe pressure conditions, while maintaining reduced friction and extended service life.

This seal is a single-acting seal designed for high-pressure dynamic sealing with a compact structure. It integrates a smaller trapezoidal back-up ring to prevent extrusion.

The design balances pressure resistance and compact installation space, while maintaining reliable sealing performance, reduced friction, and good durability.

This seal is a single-acting seal designed primarily for static face sealing. It features a symmetrical U-cup profile without pronounced chamfers, increasing the load-bearing contact area.

This improves pressure distribution and extends service life, making it suitable for flat sealing surfaces.

This seal is a single-acting seal suitable for static sealing and low-speed rotary applications. It features a symmetrical profile with increased contact area for improved load distribution.

It can provide effective sealing even on surfaces with relatively low finish quality, making it suitable for vacuum and low-pressure conditions.

This seal is a single-acting seal designed for static and low-speed rotary sealing. It features a symmetrical U-cup profile energized by a cantilever spring.

The design ensures tight sealing even under less ideal surface finishes and is widely used in rotary joints and similar applications.

This seal is a single-acting seal suitable for static and low-speed rotary applications, particularly under vacuum conditions.

The symmetrical profile increases contact area, improving pressure distribution and sealing reliability even on less refined surfaces.

This seal is a single-acting seal featuring a flanged U-cup design and a cantilever spring. It offers low friction, no stick-slip behavior, low breakaway force, and excellent wear resistance.

The flange prevents rotation of the seal. A short and robust dynamic lip reduces friction and improves durability, ensuring long service life and effective wiping performance.

This seal is a single-acting seal consisting of an asymmetrical U-cup jacket, a cantilever spring, and an additional O-ring.

The O-ring enhances pressure capacity and prevents rotation between the seal and shaft. The design provides low friction, no stick-slip, and improved wear resistance, with a robust dynamic lip for extended service life.

This seal is a single-acting seal with an asymmetrical U-cup profile and cantilever spring. It provides low friction, no stick-slip behavior, and good wear resistance.

A convex feature on the outer diameter ensures proper interference fit and prevents rotation. The short and robust dynamic lip improves durability and wiping performance.

This seal is a single-acting seal consisting of a U-cup jacket and two cantilever springs.

The dual-spring design provides enhanced force compensation, making it suitable for applications with significant pressure fluctuations or movement, ensuring stable sealing performance and longer service life.

This seal consists of two parallel U-cup jackets with internal spring elements. It accommodates a wide range of groove sizes and allows increased spacing for use with small-diameter shafts.

This configuration can form an integrated piston seal, reducing the number of precision-machined components and simplifying assembly. It can also function as a guide bearing.

This seal consists of two back-to-back symmetrical U-cup jackets and two cantilever springs. It is a bi-directional sealing element suitable for medium temperature and pressure conditions.

The design enables easy installation and replacement. Without a defined inner diameter, it can function as a floating piston.

This seal consists of a U-cup jacket, a cantilever spring, and high-temperature silicone filling in the spring groove. It is designed for hygienic applications.

This structure prevents contamination retention within the seal, improves cleanability, and enhances sealing pressure, making it suitable for food and pharmaceutical processing environments.