The Reunion M20 series plastic waterproof connector delivers all three—combining a lightweight, Stable-performance PA66 housing with IP67/IP68 waterproof and gold-plated brass contacts rated up to 20A. Designed and manufactured in-house by Reunion’s ISO-certified facilities, this connector family provides equipment manufacturers, system integrators, and maintenance engineers a proven alternative to rust-prone metal interconnects in salt-spray, chemical, and high-humidity environments.
Reunion is not a trading company—we are a vertically integrated manufacturer with over 15 years of precision molding and contact engineering experience. Each batch of our M20 series plastic waterproof connector has undergone 100% electrical testing, and wateproof test, with test records retained for full traceability. When you specify Reunion, you specify a partner that controls quality from resin drying to final assembly—backed by ISO 9001:2015, ISO 14001:2015, ISO 13485:2016, and UL recognition.
The Reunion M20 series plastic waterproof connector is a threaded circular interconnect engineered for applications demanding both substantial power delivery (up to 20A per contact) and environmental resilience. Its 20mm coupling interface features a high-strength PA66 thermoplastic housing formulated and molded directly in any RAL/Pantone color—no paint, no plating, no corrosion. The housing is inherently rust-proof and oxidation-proof, with a heat deflection temperature exceeding 200°C, ensuring reliable performance from -40°C to +105°C.
The connector is available in 2- to 9-pins power configurations, the max current support 20A, the connectors are available in panel type, cable type and assembled type options. We can customize a complete set of wiring harness components for you. You can also process the wiring harness components by yourself.
| Feature | Benefit | Validation Evidence |
| PA66 Housing | No rust, no oxidation—proven in salt spray (ASTM B117) and chemical washdown environments. | Excellent corrosion resistance |
| Up to 60% Weight Reduction | Reduces structural loading on panels, cables, and robotic arms—simplifies installation and lowers shipping costs. | Mass comparison data available against comparable brass-shell connectors. |
| IP67 waterproof | Withstands continuous immersion at 1m depth for 30 minutes | Batch-sampled immersion testing. |
| 2~9pins Configurations | 2,3,4,5,6,7,8,9pins optional | Standard off-the-shelf and custom contact-loading options. |
| Gold-Plated Brass Contacts | Low contact resistance (≤3mΩ) and corrosion protection—maintains performance in humid, saline air. | Plating thickness verified by XRF on every production lot. |
| Threaded Locking | Vibration-resistant mating—prevents loosening from machinery movement, thermal cycling, and crane operations. | Cycle-tested to ≥500 typical matings with consistent torque retention. |
| Parameter | 2-pin | 3-pin | 4-pin | 5-pin | 6-pin | 7-pin | 8-pin | 9-pin |
| Voltage Rating | 250V | 250V | 250V | 250V | 125V | 50V | 50V | 50V |
| Current Rating | 20A | 20A | 15A | 15A | 10A | 5A | 5A | 5A |
| Wire Section (mm²) | 0.75–2.5 | 0.75–2.5 | 0.5–2.0 | 0.5–2.0 | 0.25–0.75 | 0.25–0.5 | 0.25–0.5 | 0.25–2.5 |
| Specification | Detail |
| Operating Temperature | -40°C ~ +105°C |
| Protection Rating (mated) | IP67 / IP68 (1m, 30min) |
| Housing Material | PA66 |
| Contact Material | Brass with gold plating |
| Contact Resistance | ≤3mΩ |
| Mating Cycles | ≥500 |
| Weight | ~60% lighter than equivalent brass connectors |
| Compliance | RoHS, REACH, UL |
Reunion operates a fully integrated production line for the M20 series plastic waterproof connector, ensuring every unit meets our published specifications. Our process includes:
Material Drying– PA66 is precision-dried to eliminate moisture-related molding defects.
Injection Molding– Automated presses with ±0.02mm tolerance control; color pigment added directly to resin—no secondary painting.
Contact Stamping & Plating– High-speed stamping from copper alloy; selective gold plating .
Cable Processing– In-house PUR/PVC extrusion with automated cutting, stripping, and tinning; custom lengths from 0.1m to 20m.
Assembly– Semi-automated lines with torque-controlled fastening (1.0–1.2Nm coupling torque).
Electrical Testing– 100% verification of continuity, insulation resistance (≥5000MΩ), and dielectric withstand.
Environmental Sampling– Batch sampling for IP68 immersion, UV stability (ASTM G155), and thermal cycle .
Packaging– Anti-static vacuum sealing with desiccant; export-grade cartons with traceable batch labels.
Reunion’s in-house tooling and molding capabilities allow rapid customization of the M20 series plastic waterproof connector without minimum order quantities that lock you into excess inventory.
| Customizable Feature | Options Available |
| Housing Color | Any RAL or Pantone—molded directly, no painting |
| Cable Assembly | 0.1m to 20m; PUR (oil/chemical-resistant) or PVC jacket; single-ended or double-ended |
| Connector Orientation | Straight or right-angle |
| Contact Loading | 2, 3, 4, 5, 6,7,8,9 pins |
| Cable Marking | Custom printing or heat-shrink labels for circuit ID |
| Packaging | Anti-static bags, reels, or custom-labeled cartons |
For high-volume projects, Reunion’s engineering team can co-develop custom insert layouts, keying options, or specialized cable overmolds. Lead times for custom molded colors are typically 15–20 working days; standard configurations ship in 5–7 working days.
Reunion maintains active certification with recognized global bodies. We provide verification documents upon request.
| Certification | Scope |
| ISO 9001:2015 | Quality management – design, production, and after-sales |
| ISO 14001:2015 | Environmental management – waste reduction and sustainable practices |
| ISO 13485:2016 | Medical device quality management – for diagnostic/monitoring applications |
| UL Recognized | Component-level safety for North American markets |
| RoHS & REACH | Restricted substance compliance – EU and global standards |
No—the current rating is determined by the contact system and wire gauge, not the housing. The PA66 material has a heat deflection temperature exceeding 200°C, well above the connector’s -40°C to +105°C operating range. We validate every pin configuration through temperature-rise testing per IEC 60512. In our lab, the M20 series plastic waterproof connector shows temperature rise within the same limits as metal-shell equivalents. For applications exceeding 30A per contact, we recommend our M25 series.
The PA66 housing resists oils, greases, alkalis, and many acids. For specific chemical compatibility, we provide a detailed resistance chart. For environments with continuous solvent, coolant, or fuel exposure, we recommend the PUR cable option—PVC may degrade in certain chemical atmospheres. Our engineering team offers free material selection consultations for aggressive chemical applications.
Yes—sample orders are welcome. We offer evaluation kits containing 5 mating pairs with standard pin configurations. Sample pricing is available through our sales team, with sample lead times of 5–7 working days for standard configurations. For custom samples, lead times are 12–17 working days.
Address
West of 2nd and 3rd Floor, Building B, Zhongjing Zhiyun Science Park, No. 606, Fengtang Avenue, Zhancheng Community, Fuhai Street, Bao 'an District, Shenzhen
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