Published on:2026-05-24 Click:23
PEEK (polyether ether ketone) insert core for subsea and underwater connectors. Excellent chemical resistance, dimensional stability, and high-pressure performance.
The PEEK (Polyether Ether Ketone) insert core is the contact insulation body at the heart of high-performance subsea and underwater connectors. PEEK is chosen for its exceptional combination of high-pressure performance, chemical resistance, and dimensional stability -- essential in deep-sea environments where the insert must maintain precise contact alignment under hundreds of bar of hydrostatic pressure and prolonged exposure to seawater, oils, and cleaning solvents.
| Parameter | Specification |
|---|---|
| Material | PEEK (Polyether Ether Ketone) |
| Tensile Strength | 100 MPa |
| Continuous Use Temperature | Up to 250°C |
| Chemical Resistance | Excellent -- seawater, oils, fuels, most solvents |
| Dielectric Strength | ~20 kV/mm |
| Dimensional Stability | Very high -- low thermal expansion |
| Machining | CNC-machinable to <0.01 mm tolerance |
| Custom | Any pin count, shell size, contact pattern |
Provide your connector shell size and pin count for a PEEK insert core quotation: sales@rovcable.com -- Shanghai Kabel Intelligence Technology Co., Ltd.
PEEK outperforms alternative engineering plastics (Delrin, nylon, PTFE) in deep-sea applications due to its superior compressive strength (does not creep under sustained hydrostatic pressure), near-zero water absorption (maintains dimensional accuracy when wet), and broad chemical compatibility. PTFE is softer and prone to cold flow; Delrin absorbs water and swells; nylon loses strength when wet. PEEK maintains contact alignment and electrical isolation throughout the connector's service life.
Yes. If you can supply a sample, drawing, or dimension set of the original insert, we can reverse-engineer and manufacture a direct replacement in PEEK. This service is particularly valuable for maintaining legacy ocean instruments and ROV systems where the original manufacturer no longer supplies spares.
