TERSAIL designs and manufactures canted coil springs, O-shaped springs, ring contact springs and spring-energized seals in Stainless Steel 301, C18150, C17200 and C17500 — with silver-plated contact finger spring options for low-resistance, high-conductivity applications.
Tell us your application and we'll match the right canted coil spring or seal configuration — no obligation.
Every spring is engineered to your force, deflection and electrical performance targets — from a single contact finger spring to full production volumes.
High-deflection canted coil springs delivering consistent normal force across long working strokes. Ideal for connector contacts, spring-energized seal cores and electrical bonding gaskets.
Closed-loop O-shaped springs and ring contact springs in silver-plated or gold-plated finishes, providing low contact resistance and stable mechanical latching for connector and slip-ring applications.
Silver-plated contact finger spring assemblies built for high-cycle electrical connectors — combining low contact resistance, mechanical latching force and stable spiral spring geometry.
Automated CNC spring-coiling machines produce canted coil springs and spiral springs from 1mm inner diameter up to 3-meter outer diameter, in alloy or stainless steel wire.
Canted coil spring cores energized into PTFE, FFKM and PEEK seal jackets, delivering consistent sealing force across temperature and pressure cycles for fluid and electrical sealing.
In-house CNC turning and milling produces matched housings, sleeves and retainers for spring finger contact assemblies and spring-energized seal systems — verified end-to-end before shipment.
Canted coil springs and contact spring components are coiled from corrosion-resistant and high-conductivity alloys, with silver-plated, gold-plated or passivated finishes available.
From high-voltage switchgear to medical instrumentation, our canted coil springs, spring-energized seals and contact springs are qualified for harsh-environment, high-reliability use.
Spring-energized seals & EMI/RFI shielding canted coil springs Up to 1100kV Interconnect Reliability.
Silver-plated contact finger springs for high-current connectors, battery modules and charging interfaces.
Ring contact springs and O-shaped springs for industrial connector and interconnect manufacturers.
Vibration-resistant canted coil springs and contact springs for rolling-stock electrical systems.
Lightweight stainless and C-alloy spring contacts meeting strict reliability and shielding requirements.
Biocompatible-grade spring-energized seals and miniature contact springs for diagnostic equipment.
Spiral springs and spring finger contacts for sensors, slip rings and automated control hardware.
Compact ring contact springs and canted coil springs for brush and encoder contact assemblies.
TERSAIL is a comprehensive new-material seal and precision spring production enterprise integrating R&D, design, manufacturing and sales. Our canted coil springs, spring-energized seals, silver-plated contact finger springs and ring contact springs are produced on automated CNC coiling lines and verified through in-house hardness, contact-resistance and durometer testing.
By combining imported material formulations with precision CNC machining — boring down to a 1mm inner diameter and turning components up to 3 meters in outer diameter — we deliver spiral springs and O-shaped springs that meet exacting force, deflection and electrical performance specifications across PTFE, PCTFE, UPE, FKM, FFKM, PEEK and polyurethane carrier materials.
Send your drawing, deflection/force target or a competitor part number for canted coil spring, contact finger spring, O-shaped spring or spring-energized seal.
Our engineers cross-reference materials (301, C18150, C17200, C17500) and plating (silver, gold) to match or improve performance.
Springs and ring contact springs are coiled, plated and tested for contact resistance, hardness and force-deflection curves.
Free samples ship in as little as 2 weeks, followed by production runs to your volume and packaging requirements.
Whether you need a custom canted coil spring, a spring-energized seal, a silver-plated contact finger spring or a ring contact spring matched to an existing part, our team can quote tooling, lead time and pricing for prototype and production volumes.
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