6 Spring Energized Seals Types

HANDA canted coil springs are engineered to deliver consistent contact force, wide deflection range, and long-term reliability in demanding sealing and electrical applications. Designed with precision geometry, our springs perform best when paired with correctly specified grooves. HANDA provides full technical support to help customers avoid common groove design mistakes such as improper depth, incorrect fill ratio, and tolerance stack-up issues. Manufactured from high-quality alloys including stainless steel, Elgiloy, and Inconel, HANDA canted coil springs maintain stable performance under extreme temperatures, high pressure, and dynamic motion. Our engineering team offers customized groove recommendations, load-deflection data, and application guidance to ensure optimal fit and function. Whether used in aerospace, semiconductor, oil & gas, or medical equipment, HANDA solutions help reduce leakage risk, prevent premature fatigue, and extend service life—giving engineers confidence in every design.

Product Description – Canted Coil Spring for High-Pressure Valve Sealing Our Canted Coil Springs are precision-engineered elastic sealing elements designed for high-pressure valves, hydrogen systems, aerospace fluid lines, chemical processing equipment, and critical sealing interfaces. With their unique slanted coil geometry, these springs deliver a highly stable, predictable load-deflection curve, ensuring consistent sealing performance even under extreme pressure, rapid pressure cycling, vibration, or thermal fluctuctuations. Manufactured with high-performance materials such as 17-7PH, MP35N, Inconel® X-750, or stainless steel, canted coil springs provide excellent corrosion resistance, low creep, and superior fatigue life, making them ideal for long-term, maintenance-free applications. The spring can be integrated into U-cup seals, metal-to-metal seals, PTFE/PEEK energized seals, or customized sealing grooves in valves, compressors, and connectors. Through precise control of coil angle, wire diameter, free height, and spring force, our canted coil springs maintain consistent sealing force without risk of extrusion or permanent deformation, even in ultra-high-pressure environments. Whether used for static sealing, dynamic reciprocating motion, or rotational sealing, canted coil springs ensure your system achieves leak-free reliability, extended service life, and enhanced safety performance.

Hastelloy C276 canted coil springs represent a revolutionary advancement in spring technology, specifically engineered for extreme industrial environments where conventional springs fail to perform reliably.

Inconel 718 canted coil springs play an irreplaceable role in many fields with strict requirements on components due to their excellent material properties, unique structural design, and outstanding performance.

In industries where corrosion, high temperatures, and cyclic stresses compromise conventional springs, Hastelloy 276 canted coil springs provide unmatched reliability. Crafted from Hastelloy C-276 alloy—a nickel-molybdenum-chromium superalloy—these springs excel in the world’s most aggressive operational environments.

The Cantilever U Spring (also known as U-shaped spring or meander spring) is a precision-engineered elastic component featuring a unique U-shaped cantilever beam structure. It is specifically designed for applications requiring directional force control and compact installation. Key Advantages High Load Capacity & Long Stroke: The U-shaped geometry provides stable spring force over a wide deflection range, making it ideal for dynamic applications such as spring-energized seals. Space-Saving Design: Compared to traditional coil springs, the U spring requires less radial space, enabling miniaturization in tight engineering envelopes. Extreme Environment Compatibility: Available in specialized materials including stainless steel, Elgiloy, beryllium copper, and Hastelloy to withstand high temperatures, corrosion, and aggressive media. Typical Applications Sealing Systems: Provides continuous energizing force for PTFE seals, ensuring reliable performance under high pressure or elevated temperatures. Medical Devices: Precision force control in surgical instruments, drug delivery systems, and implantable devices. Industrial & Aerospace: Actuation mechanisms, connector contacts, vibration damping, and valve seating. Available in standard sizes or custom designs to meet your specific load and dimensional requirements.

Elgiloy U-shaped springs are high-performance spring energizers commonly used in demanding sealing applications. These springs are designed to provide a consistent and controlled force, ensuring reliable sealing in extreme environments.

Cantilever U springs, known for their versatile applications, require careful material selection to ensure optimal performance and durability.

Cantilever springs, integral to many mechanical systems, come in various shapes and designs, each suited to specific applications. Among these, U-shaped and V-shaped cantilever springs stand out for their distinct characteristics and performance profiles.

Cantilever U Spring is also known as: U Spring, Cantilevered U Spring, Meander U Spring, Meander Springs. Cantilever U springs, also referred to as U-shaped cantilever springs, are a type of mechanical spring that typically features a U-shaped design. The structure allows them to deflect under load, offering both support and flexibility to the system they are used in. These springs are typically characterized by their ability to absorb shocks, resist vibrations, and return to their original shape after deflection.      

The Cantilever V Spring (also known as V Spring or Meander Spring) is a precision-engineered spring energizer designed for high-performance sealing applications. Manufactured from strip metal formed into a distinctive V-shaped pattern, these springs provide reliable, cost-effective energizing force for both static and slow-to-moderate dynamic seals. Key Features: Wide Deflection Range: Accommodates dimensional tolerances, misalignment, and thermal expansion Linear Load Characteristics: Predictable force increase with compression for consistent performance High-Temperature Capability: Maintains integrity up to 500°F (260°C) with minimal embedding risk Material Versatility: Available in stainless steels (301, 302, 304, 316, 17-7PH) and exotic alloys (Inconel®, Hastelloy®, Elgiloy®) Multiple Configurations: Supplied in continuous lengths or pre-welded rings; stackable for increased load Typical Applications: Oil and gas valves, semiconductor equipment, medical devices, aerospace systems, and industrial fluid power.

From structural design to practical application, V Springs demonstrate a high degree of adaptability to the working environment of water jets.

HANDA Detached Leg Spring is a precision-engineered spring designed to provide reliable contact force and flexibility in compact electronic assemblies. Unlike traditional spring designs, the detached leg structure allows each leg to flex independently, ensuring stable mechanical and electrical contact even under vibration, misalignment, or repeated compression. Manufactured from high-performance materials such as stainless steel, beryllium copper, MP35N, and Elgiloy, HANDA Detached Leg Springs offer excellent durability, corrosion resistance, and long fatigue life. These properties make them suitable for demanding environments where consistent contact performance is critical. The optimized spring geometry ensures uniform force distribution, low contact resistance, and high reliability, helping improve the overall performance of electrical systems. In addition, the compact design allows easy integration into space-limited applications. HANDA Detached Leg Springs are widely used in electrical connectors, EMI shielding systems, automotive electronics, telecommunications equipment, and precision electronic devices, providing dependable contact solutions for modern high-performance applications.

Detached leg springs, often referred to as fishback or independent leg springs, are mechanical springs characterized by the separation or detachment of the spring legs from fixed anchor points. Unlike traditional springs, where the entire coil or structure is bound at both ends, detached leg springs feature one or more legs that remain free, allowing them to flex independently. This unique design grants these springs significant versatility in motion control, load distribution, and energy absorption.

Detached Leg Spring is also known as: Detached Leg Spring | Fish-back Spring | Fish Back Spring. Detached Leg Spring may be a specially designed spring. It is distinguished by the separation of its “legs” or support parts from the main body, allowing for more flexible installation and configuration.

Full contact springs are precision-engineered components designed to deliver uniform force distribution across their entire surface, ensuring optimal performance in high-stress environments. At Handa Spring, we combine decades of expertise with cutting-edge technology to manufacture springs that meet the rigorous demands of industries such as automotive, aerospace, medical devices, and renewable energy.

Full contact springs are specialized springs that provide even and uniform contact with a surface or component. In essence, they are designed to ensure that the entire contact area of the spring remains in full contact with the surface or substrate they are intended to interact with. This provides consistent pressure and force distribution, preventing potential failure points that could arise from uneven contact.

Full Contact Spring is also known as: Raco Spring,Continuous Contact Spring Full contact springs, also referred to as Raco springs or continuous contact springs, are crucial components in various sealing applications, particularly in environments requiring high reliability and durability. These springs are designed to maintain continuous contact throughout the full circumference of the sealing lips, ensuring an effective seal even under extreme conditions.

Full Contact Spring is also known as: Raco Spring,Continuous Contact Spring. Full Contact Springs are engineered to meet the highest standards of precision, durability, and performance. Whether you’re in the automotive, aerospace, or industrial sectors, our springs deliver unmatched reliability and efficiency.

The Φ10 mm helical spring for seal rings, with its sophisticated structure, premium materials, and robust performance, plays a pivotal role in industrial sealing. Reliable across multiple industries, it supports safer, more efficient production.

Stainless Steel 301 O-type PTFE Spring Energized Seal Spring has become a favored key component in the sealing industry due to its excellent material properties, exquisite working principle, significant performance advantages and wide application fields.

Elgiloy 2.0*1.2*0.1 helical springs represent a specialized configuration of Elgiloy springs, combining precise dimensional specifications with the superior properties of Elgiloy alloy.

Elgiloy helical springs represent a premium solution for applications demanding exceptional performance, particularly in harsh environments or critical systems where conventional spring materials might fail. Their unique combination of properties makes them invaluable in industries where reliability and consistency are paramount.

BeCu O-ring springs exemplify the fusion of material science and advanced manufacturing, enabling next-generation innovations in high-reliability engineering.

Helical springs are transitioning from passive components to intelligent, adaptive systems through advancements in materials science, digital twins, and sustainable manufacturing. Future challenges lie in conquering extreme environments, enabling nanotechnology-scale applications, and achieving full lifecycle circularity.