English
For 15 years, Reunion's senior sealing-system engineers have observed that over 70% of field connector failures originate not from poor design, but from O-ring groove tolerance drift and improper field torque application. This insight directly shaped our M8 series Industrial waterproof connector — a purpose-built interconnect for food processing, automotive paint shops, and outdoor automation operating in wet, dusty, or daily washdown regimes.
Certified to DIN EN 61076-2-104, this miniature circular connector integrates a vibration-resistant threaded locking mechanism with an oversized O-ring sealing system (groove tolerance held to ±0.05mm via precision CNC machining). The result: IP67 protection verified on every production batch through actual water immersion at 1m for 30 minutes — not merely simulated or declared. The precision-machined brass contacts feature selective gold plating, ensuring contact resistance ≤3mΩ even after 100+ mating cycles, supporting discrete sensor signals, 4-20mA analog loops, 0-10V outputs, and IO-Link (IEC 61131-9) at 230.4 kbps.
Reunion manufactures this M8 series Industrial waterproof connector entirely in-house: from lathe machining of metal shells through injection-molding of PA66 insulators to final assembly and 100% electrical testing (continuity, insulation resistance, dielectric withstand) on every single unit. Available in unshielded and Shielded variants, with panel-mount terminations including solder, PCB or flying leads, the series adapts to diverse equipment architectures while maintaining waterproof integrity.
| Aspect | Reunion M8 Series | Premium European Brands | Low-Cost Unbranded |
| Price | Volume-friendly, direct-factory pricing | 3–4× higher | Cheaper upfront |
| IP67 Verification | Batch immersion-tested | Batch-tested | Declaration only — never verified |
| 100% Electrical Test | Every unit | Sample-based | Random or none |
| O-Ring Groove Tolerance | ±0.05mm — precision CNC controlled | ±0.1mm typical | Uncontrolled |
| PUR Cable Option | Standard, in-house overmolded | Special-order (long lead time) | Limited |
| Traceability | ERP-traceable from resin lot to finished connector | Yes | None |
| Lead Time | 12–15 days | 4–8 weeks | Unpredictable |
| Custom MOQ | Low (100 pcs for custom assemblies) | High (500+) | Not offered |
| Technical Support | 24h response from 10-person engineering team | Good but slower | Unresponsive |
| Certifications | ISO 9001, 14001, 13485 | Usually 9001 | Typically none |
The Reunion advantage: You receive documented quality, full DIN compliance, and verified IP67 sealing at cost‑effective pricing — without the premium cost of European brands or the uncertainty of unbranded alternatives.
| Parameter | 2-pin | 3-pin | 4-pin | 5-pin | 6-pin | 8-pin |
| Current Rating | 4A | 4A | 4A | 3A | 2A | 1.5A |
| Voltage Rating | 60V | 60V | 60V | 30V | 30V | 30V |
| Withstanding Voltage | 1500V | 1500V | 1500V | 1500V | 800V | 800V |
| Wire Gauge (AWG) | 22 | 22 | 22 | 24 | 24 | 26 |
| Contact Resistance | ≤3mΩ (all configurations) | |||||
| Mating Cycles | ≥100 (typical 300-500) | |||||
| Operating Temperature | -25°C ~ +85°C | |||||
| Protection Rating | IP67 (mated — batch immersion-verified) | |||||
| Salt Mist Resistance | 48 hours | |||||
| Insulator Material | PA66 (V-0 flame retardant) | |||||
| Contact Material | Brass + gold plating | |||||
| Shielding | Unshielded or Shielded | |||||
| Design Standard | DIN EN 61076-2-104 | |||||
| All materials RoHS compliant | ||||||
Reunion's dedicated M8 waterproof production line operates under ISO 13485:2016 (medical-device grade quality controls), extending beyond typical industrial standards. Every shipped unit of our M8 series Industrial waterproof connector is backed by:
| Certification | Scope |
| ISO 9001:2015 | Quality management — design, production, and after-sales service |
| ISO 14001:2015 | Environmental management — verified waste reduction |
| ISO 13485:2016 | Medical device quality management — applicable for diagnostic equipment |
| RoHS & REACH | Full compliance with EU hazardous substance directives |
| Item | Detail |
| Standard Packaging | Anti-static bags with individual cavity protection; reinforced cartons with cushioning |
| Lead Time | Samples: 5–7 days; Production orders: 12–15 days; Custom cable assemblies: 15–20 days |
| Shipping Methods | Bulk: sea or air freight; Samples: express (DHL, FedEx, TNT, UPS, EMS) |
| Delivery Terms | EXW, FCA, FOB, CIF, CPT — flexible |
| Warranty | 24 months from shipment against manufacturing defects — including seal integrity |
| Technical Support | Engineering response within 24 hours; installation guides, torque specifications, and cross-reference documentation available |
| Inventory Programs | Consignment stock and VMI (Vendor Managed Inventory) available for long-term volume contracts |
| Risk-Reversal Commitment | If any connector fails due to water ingress within warranty period under proper installation, Reunion provides advance replacement before return — zero production downtime |
A1: Reunion performs actual water immersion testing on every production batch of the M8 series Industrial waterproof connector. We randomly sample from each batch, mate with corresponding cables, and immerse at 1m depth for 30 minutes. Post-immersion electrical tests (insulation resistance + dielectric withstand) confirm zero ingress. Batch test records are retained and available for your audit. We do not rely on material declarations. For customers requiring IP68 (1.5m, 30min) or extended immersion, custom verification is available upon request.
A2: Yes — fully compatible with IO-Link (IEC 61131-9) using the standard 4-pin configuration. For reliable 230.4 kbps communication in washdown areas with VFDs or welding equipment, Reunion specifically recommends:
- 360° shielded version mandatory for EMI-prone environments
- PUR cable resists washdown chemicals, oils, and UV exposure
- ≥0.3µm gold plating maintains low contact resistance after repeated washdown cycles
- Max cable length: 20m at 230.4 kbps
We provide signal integrity test reports (including post-immersion data) for our M8 series Industrial waterproof connector upon request.
A3: Based on Reunion's 15 years of sealing application experience, we recommend:
- Mating torque: Hand-tighten until O-ring contacts the panel surface, then apply 0.4–0.6 Nm using a torque wrench. Do not exceed 0.8 Nm.
- O-ring inspection: Inspect at each disconnect. Replace if deformation, cracking, or hardening is visible. O-rings available as service parts.
- Replacement schedule: For daily washdown exposure annually; for standard factory floors every 2–3 years.
- Cable bend radius: Maintain 5× cable diameter minimum at connector entry.
- Cable orientation: In washdown applications, orient cable exit downward to prevent liquid pooling near the seal interface.
- Cleaning: Use mild detergent and water. Avoid directing pressure washers at the mating interface.
A4: Absolutely. Samples are available within 5–7 days. We encourage customers to perform their own washdown simulation — and we offer engineering support to review your test setup and application requirements.
Contact our engineering team with your specific requirements — we respond within 24 hours.
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
Tel
