GX12 / GX16 / GX20 Waterproof Aviation Connector – 2–15 Pin Male & Female, Industrial Machinery & Panel Wiring

The complete GX series waterproof aviation connector range — GX12 (12mm), GX16 (16mm), and GX20 (20mm) — in a single listing covering 2 through 15 pin configurations. GX series connectors with IP67 waterproof rating are suitable for outdoor industrial machinery, panel wiring in wet environments, and applications where the standard non-waterproof GX series is insufficient. The screw-lock coupling mechanism provides vibration-resistant mating; the IP67 seal (achieved via O-ring on the mating face and individual wire seals at the cable entry) prevents water ingress when mated.

GX Series Size & Rating Comparison

• GX12 (12mm thread): 5A per contact (2–5 pin), 3A (6–7 pin). Panel cutout: 12mm. For compact equipment with limited panel space. Up to 7 pins.
• GX16 (16mm thread): 5A per contact (2–5 pin), 3A (6–10 pin). Panel cutout: 16mm. Most common GX size. Up to 10 pins.
• GX20 (20mm thread): 5A per contact (2–5 pin), 3A (6–12 pin), higher current on 2–3 pin variants. Panel cutout: 20mm. For higher-current connections and maximum mechanical robustness. Up to 15 pins.

Key Specifications

• Sizes: GX12, GX16, GX20 (select above)
• Pin Configurations: 2–15 pin (availability varies by size, select above)
• IP Rating: IP67 (waterproof variant)
• Voltage Rating: 250V AC/DC
• Contact Material: Copper alloy, gold-plated
• Body Material: Zinc alloy, nickel-plated
• Quantity: 5, 10, or 20 sets (select above)

Standard GX vs Waterproof GX — When to Upgrade

• Standard GX (IP50): For indoor equipment, protected enclosures, and applications with no water exposure. Lower cost. Adequate for the majority of instrument and industrial control applications.
• Waterproof GX IP67 (this product): For outdoor machinery, wet industrial environments, marine applications, and any installation where the connector may be exposed to rain, spray, or washdown. The IP67 rating requires both the mating face O-ring and the cable entry wire seals to be correctly installed — an improperly assembled waterproof GX connector will not achieve IP67.

Frequently Asked Questions

How do I achieve IP67 with a GX waterproof connector?

Three conditions must be met: (1) The mating face O-ring must be present and undamaged — inspect before mating and replace if cracked or deformed. (2) The cable entry must use the correct wire seal for the cable OD — the seal must compress around the cable jacket to prevent water ingress at the rear. (3) The coupling nut must be fully tightened — finger-tight is not sufficient for IP67. Tighten with a wrench until the O-ring is fully compressed. A connector that is only partially tightened will not maintain IP67 under water pressure.

What is the maximum number of pins available in each GX size?

GX12: maximum 7 pins. GX16: maximum 10 pins. GX20: maximum 15 pins. Higher pin counts require larger housing diameters to maintain adequate contact spacing and insulation. If more than 15 circuits are required in a single connector, use M23 or M40 industrial circular connectors, or split the circuits across multiple GX connectors.

Can I use GX waterproof connectors for 3-phase power?

Yes, for low-power 3-phase applications. A GX16 3-pin connector at 5A per contact supports 3-phase loads up to approximately 3.5kW at 400V (5A × 400V × √3 ≈ 3.46kW). For higher-power 3-phase connections, use CEE industrial connectors (IEC 60309) which are specifically designed and rated for 3-phase power distribution.

Are GX connectors compatible with M12 or M16 industrial connectors?

No. GX connectors use a different thread pitch and contact geometry from M12 (IEC 61076-2-101) and M16 industrial connectors. GX connectors are a Chinese aviation-style standard and are not interchangeable with European M12/M16 industrial connectors. Only mate GX connectors with other GX connectors of the same size and pin count.

Typical Applications

• Outdoor industrial machinery: Sensor and actuator connections on equipment exposed to rain and wash-down
• Marine: Deck equipment connections, navigation instrument wiring, bilge pump controls
• Agricultural equipment: Outdoor sensor connections on tractors and implements
• Construction equipment: Panel connections on excavators, cranes, and mobile equipment
• Outdoor lighting: Control connections for outdoor LED lighting systems

Package Contents

5, 10, or 20 sets (select above) — each set: male plug + female socket (GX size and pin count as selected). Rear nut, O-ring, and wire seals included.