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The 8-pin waterproof aviation sealed connector for underwater robots is part of MarineConn’s nitrile-rbody rubber series for subsea vehicles: solid copper gold-plated pins in a molded insulating body, with an M18×1 / M23×1 threaded interface, rated 300 VDC/AC and tested to 500+ mating cycles. Supplied as plug, socket or mated pair to order.
Basic Info.
| Gender | Male / Female (per model) |
| Application | Underwater / subsea equipment, ROV & AUV, marine instrumentation, ocean engineering |
| Certification | RoHS, CE, ISO9001 |
| Customization | Available — OEM/ODM (pin count, cable length, interface, logo) |
| MOQ | 1 piece (trial order welcome) |
| Transport Package | Export carton |
| Lead Time | To be negotiated (per quantity and customization) |
| Shipping | DHL / FedEx / UPS / TNT express; air or sea freight for bulk orders |
Product Highlights
- Solid copper gold-plated pins: power pins use a gold-plating process for corrosion resistance and safe, stable current delivery.
- Six built-in advantages: pure copper wiring, strong conductivity, corrosion resistance, oxidation resistance, stable current transmission and convenient welding.
- 500+ mating cycles: tested insertion life so the pair survives repeated deck and mission handling.
- Pull-resistant jacket: CR brand new cable material — soft, tensile-resistant, and never recycled second-hand material.
- Threaded positive lock: M18×1 plug thread with M23×1 internal receptacle thread keeps the pair seated under vibration.
Key Specifications
| Contact arrangement | Per model (4–36 pins, plug or socket — see title / drawing) |
| Rated voltage | 300 VDC/AC |
| Insulation resistance | 50–75 MΩ |
| Contact resistance | <0.01 Ω |
| Mating cycles | ≥500 |
| Cable tensile strength | 50–500 kg |
| Main body material | Nitrile rubber (CR new material jacket) |
| Contacts | Solid copper, gold-plated pins |
| Coupling thread | M18×1 (plug) / M23×1 receptacle internal thread |
| Sealing | Integral rubber body + compression shoulder |
Structure & Sealing
The molded rubber body seals by compression: the metal base seats through the housing and the shoulder compresses as it is tightened, so no separate gasket is needed. The plug threads home onto the receptacle (M23×1 internal thread) and the face geometry completes the seal at full engagement. Dimensions follow the series drawing: 42.7 mm coupling length, 60 mm over-mold, Φ26 cable side, Φ1.30 mm pins.
Applications
- ROV / AUV power and signal pass-throughs
- Underwater robot arm and tooling feeds
- Subsea camera and lighting harnesses
- Marine equipment retrofits and spare parts
Customization & OEM
- Pin count 4–36 on the same platform
- Plug / socket / mated pair supply
- Cable length, gauge and jacket options
- Thread and dimension machining to drawing
Packaging & Delivery
In-stock items ship within 1 day; customized builds within 4–5 days. Each connector ships in an ESD-safe bag with protective caps, foam-lined export carton. Door-to-door courier for small parcels; air / sea freight for volume orders.
Quality & Compliance
Manufactured under an ISO9001 quality system; RoHS and CE compliant. Every unit passes 100% visual and function inspection before packing.
FAQ
What is the rated voltage?
300 VDC/AC per the series parameter table; higher ratings are available on customized builds.
How many mating cycles does it last?
The series is rated for at least 500 insertions.
Can I order just the socket half?
Yes — plug, socket and mated pairs are all available.
Is the cable jacket marine-grade?
Yes, it uses new CR material selected for flexibility and tensile strength in marine service.