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Canted Coil Springs

Canted Coil Spring Selection Guide

Choosing the right Canted Coil Spring is essential to achieving reliable performance, especially in high-precision sealing, electrical contact, and EMI/RFI shielding applications. At Handa Seal, we help B2B customers—from aerospace OEMs to medical device engineers—select or customize the ideal spring based on a range of technical requirements.

At Handa Seal, we design and manufacture premium Canted Coil Springs engineered to deliver consistent force, EMI shielding, and leak-tight sealing in demanding environments. Two of the most critical industries that rely on our technology are medical devices and oil & gas equipment. With a combination of material versatility, engineering expertise, and tight tolerance production, our spring solutions ensure maximum reliability and performance in life-saving and mission-critical systems.

Customization & Manufacturing Capabilities

Every industry has its own specifications—and we deliver. At Handa Spring, we provide a full range of engineering, cutting, and welding services, including:

  • Custom lengths or pre-cut and welded radial springs based on dash numbers or groove centerlines.

  • Short lead times: <2 weeks for stainless steel, 2–3 weeks for exotic alloys.

  • Available finishing options: Gold, Silver, Nickel, Tin, and others.

Standard Size Range & Materials

Size Range:

  • B/C sizes ≈Ø0.5mm(0.019″)

  • ID=1mm(0.039″)

Materials Type:

  • Stainless steel (e.g., 302, 316), Platinum Iridium, MP35N, Elgiloy®, Beryllium copper, Inconel®, Hastelloy® etc.,

HandaSeal manufactures canted coil springs in virtually all dimensions.

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Series Typical Load “A”
(Wire OD)		 “B”
(Width)		 “C”
(Height)		 “T”
(Cut Length)		 “ID”
HD-CS-L132 L 0.08 0.62 0.70 7.60 1.80
HD-CS-M132 M 0.10 0.62 0.70 7.60 1.80
HD-CS-H132 H 0.12 0.65 0.75 7.70 1.80
HD-CS-L000 L 0.12 1.40 1.55 12.90 2.70
HD-CS-M000 M 0.15 1.40 1.55 12.90 2.70
HD-CS-H000 H 0.20 1.20 1.32 12.20 2.70
HD-CS-L100 L 0.18 2.00 2.40 19.80 4.30
HD-CS-M100 M 0.35 2.00 2.40 20.10 4.40
HD-CS-H100 H 0.35 2.00 2.30 19.80 4.30
HD-CS-L200 L 0.30 2.80 3.20 30.10 6.80
HD-CS-M200 M 0.35 2.80 3.20 30.10 6.80
HD-CS-H200 H 0.40 2.80 3.20 30.10 6.80
HD-CS-L300 L 0.40 4.00 4.50 42.70 9.60
HD-CS-M300 M 0.50 4.00 4.50 42.70 9.60
HD-CS-H300 H 0.60 4.00 4.50 42.70 9.60
HD-CS-L400 L 0.50 5.50 6.00 61.20 14.00
HD-CS-M400 M 0.60 5.50 6.00 61.20 14.00
HD-CS-H400 H 0.70 5.50 6.00 61.20 14.00
HD-CS-L500 L 0.60 8.20 9.20 96.40 22.50
HD-CS-M500 M 0.70 8.20 9.20 96.40 22.50
HD-CS-H500 H 1.00 8.20 9.20 96.40 22.50
HD-CS-L600 L 0.70 11.40 12.80 152.00 37.00
HD-CS-M600 M 1.00 11.40 12.80 152.00 37.00
HD-CS-H600 H 1.20 11.40 12.80 152.00 37.00

Need tighter tolerances, CAD files, or special finishes? Our team is ready to assist.

How a Canted Coil Spring Works

Canted coil springs, are engineered to deliver consistent force, uniform contact pressure, and multi-directional load support. At Handa Spring, we specialize in designing and manufacturing custom canted coil springs that meet the highest performance standards for demanding applications.

Canted Coil Spring Deflection | Handa Spring

1.Constant Force Through Working Deflection Range

Canted Coil Spring Deflection Force | Handa Spring

As the spring is further compressed, its load remains relatively constant throughout the working deflection range. This continues until the maximum deflection point, where the individual coils come into contact with one another. Beyond this point, no further deflection is possible.

Unlike traditional sealing elements such as O-rings or V-springs, which exert a force that increases proportionally with deflection, Handa’s canted coil springs provide only the required force needed for mechanical retention or electrical conductivity. This results in:

  • Lower insertion and breakaway forces
  • Reduced component wear
  • Longer operational cycle life

This constant force profile is especially valuable in applications involving high mating cycles or sensitive assemblies.

2.Electrical Design Considerations

Canted Coil Spring Plating Data | Handa Spring

In electrical and EMI shielding applications, the performance of a canted coil spring depends not only on its geometry but also on the material and surface finish. Key design factors include:

  • Base wire material (e.g., stainless steel, Elgiloy®, beryllium copper)
  • Plating material (e.g., gold, silver, nickel)
  • Plating thickness

Applying a conductive plating layer over the spring’s wire significantly enhances its electrical conductivity, improves signal integrity, and ensures consistent grounding.

At Handa Spring, we offer a range of plating options to match your specific performance and corrosion resistance requirements.

🚀Frequently Asked Questions

Q: What is a canted coil spring used for?

A: It’s used for sealing, electrical contact, and EMI shielding in demanding applications like surgical robots, downhole tools, and high-frequency electronics.

Q: What materials can Handa Spring use for these springs?

A: Common materials include Elgiloy®, Inconel® 625, 316 SS, and Hastelloy® C-276. Plating options include gold, silver, nickel, and tin.

Q: Can I request a custom size or load specification?

A: Yes. Handa Spring supports full customization and prototyping—including free consultation and sample evaluation.