LLT Connector

Product Family

Waterproof Circular Connectors

Waterproof Circular Connectors solutions for industrial, energy, and outdoor applications.

Waterproof Circular Connectors is the core LLT landing page for sealed circular interfaces used where power or signal links must stay stable under moisture, dust, vibration, and field service cycles.

The current catalog includes 41 published references across L25, M19, M25, L20 series and Threaded, Push-Lock, Bayonet structures. Use this page to compare locking direction, panel versus cable installation logic, and the sealing path before requesting drawings, samples, or project pricing.

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Waterproof Circular Connectors image 1
Application visuals Category presentation built around current landing assets

Selection directions for Waterproof Circular Connectors

Shell size and pin layout

Choose shell size, pole count, and contact spacing together so the connector supports both electrical range and installation density.

Locking structure and sealing stack

Threaded or push-lock selection should be evaluated with gasket path, cable exit sealing, and maintenance frequency.

Cable OD and mounting direction

Check cable diameter, bend space, and receptacle installation style before fixing the circular interface.

Application scenario

Outdoor automation modules, lighting systems, and distributed control boxes

Application scenario

Machine-mounted cable interfaces exposed to vibration, spray, dust, or washdown

Application scenario

Power and signal branches that need compact circular mating with clear keying

Application scenario

OEM programs that move from sample verification into repeat batch delivery

Technical overview

Waterproof Circular Connectors

Waterproof Circular Connectors category landing page. Add product stories, technical highlights, and image blocks here.

Related solutions and industries

Connect this family to environment-driven pages so buyers can move from application problem to connector architecture faster.

Related product families

Use adjacent family pages to compare mounting style, electrical range, and installation method.

These CMS-driven cards represent the most useful published references for early comparison.

Filter products in Waterproof Circular Connectors

Find exact products by series, structure type, and model or application terms.

LLT L25 rear panel mount junction box thumbnail

L25 Threaded

LLT L25 rear panel mount junction box

The L25 Waterproof Aviation Connector provides a secure, industrial-grade seal for power connections. Designed for ease of use, the solderless screw terminal design allows you to create professional-grade, weatherproof connections in minutes, saving significant time during field installations and repairs. This L25 robust connector set is built for performance and longevity. It features a high-strength PA66 Nylon shell and gold-plated brass hardware to ensure optimal signal and power transmission. With an IP68 waterproof rating and a wide operating temperature range of -40°C to 105°C, it is the perfect solution for outdoor LED lighting, marine electronics, and industrial automation systems
LLT IP67 5 Pin 600VAC 20A Waterproof Male Female Connectors M19 thumbnail

M19 Push-Lock

LLT IP67 5 Pin 600VAC 20A Waterproof Male Female Connectors M19

M19 robust connector set is built for performance and longevity. It features a high-strength PA66 Nylon shell and gold-plated brass hardware to ensure optimal signal and power transmission. With an IP68 waterproof rating and a wide operating temperature range of -40°C to 105°C, it is the perfect solution for outdoor LED lighting, marine electronics, and industrial automation systems. Voltage/Current: 600V / 20A for 2-4Pin,100V 5A for multi Pin Pin Configuration: 2-18Pin (Male/Female set)
LLT 5 Pin Push Lock Waterproof Circular Connectors Power Cable M25 Circular Connector IP67 thumbnail

M25 Push-Lock

LLT 5 Pin Push Lock Waterproof Circular Connectors Power Cable M25 Circular Connector IP67

M25 waterproof round electrical connectors is the perfect solution to make your own waterproof connection cables easily. The M25 Waterproof Aviation Connector provides a secure, industrial-grade seal for power connections. Designed for ease of use, the solderless screw terminal design allows you to create professional-grade, weatherproof connections in minutes, saving significant time during field installations and repairs.
LLT M25 2 Pin Waterproof Circular Connectors 35A 600V Circular Cable Connectors thumbnail

M25 Push-Lock

LLT M25 2 Pin Waterproof Circular Connectors 35A 600V Circular Cable Connectors

The M25 Waterproof Aviation Connector provides a secure, industrial-grade seal for power connections. Designed for ease of use, the solderless screw terminal design allows you to create professional-grade, weatherproof connections in minutes, saving significant time during field installations and repairs. This robust connector set is built for performance and longevity. It features a high-strength PA66 Nylon shell and gold-plated brass hardware to ensure optimal signal and power transmission. With an IP68 waterproof rating and a wide operating temperature range of -40°C to 105°C, it is the perfect solution for outdoor LED lighting, marine electronics, and industrial automation systems. Voltage/Current: 600V / 35A for 2-4Pin,100V 5A for multi Pin Pin Configuration: 2-24Pin (Male/Female set) Materials: PA/Nylon Housing, Gold-Plated Brass Pins Cable Range: Φ8.5mm to Φ16mm Interface: AC/DC Compatible
LLT M16 4 Poles Waterproof Male Female Connector Plastic Circular Connectors thumbnail

M16 Threaded

LLT M16 4 Poles Waterproof Male Female Connector Plastic Circular Connectors

The M16 Waterproof Aviation Connector provides a secure, industrial-grade seal for power connections. Designed for ease of use, the solderless screw terminal design allows you to create professional-grade, weatherproof connections in minutes, saving significant time during field installations and repairs. M16 robust connector set is built for performance and longevity. It features a high-strength PA66 Nylon shell and gold-plated brass hardware to ensure optimal signal and power transmission. With an IP68 waterproof rating and a wide operating temperature range of -40°C to 105°C, it is the perfect solution for outdoor LED lighting, Agricultural Grow Lights,marine electronics, and industrial automation systems. Voltage/Current: 250V / 15A for 2-4Pin,100V 5A for multi Pin Pin Configuration: 2-12Pin (Male/Female set) Materials: PA/Nylon Housing, Gold-Plated Brass Pins Interface: AC/DC Compatible Cable Range: Φ5.5mm to Φ8.5mm
LLT Waterproof Connector M19 Ip67 14 Pin Male Female Plug For Signal thumbnail

M19 Threaded

LLT Waterproof Connector M19 Ip67 14 Pin Male Female Plug For Signal

Key Features Reliable Weatherproofing: IP67/IP68 rated protection ensures stable performance in harsh outdoor, marine, or industrial environments. Solderless Installation: Features a convenient screw locking mechanism for quick field assembly without the need for specialized welding tools. High-Power Capacity: Engineered to handle up to 600V and 20A for 2-4 pin, making it ideal for high-demand LED lighting and industrial machinery.also have multi pin for signal. Extreme Durability: Constructed with high-quality PA66 Nylon and gold-plated brass contacts for superior corrosion resistance and conductivity. Versatile Cable Fit: Compatible with multiple cable diameters ranging from 6.3mm to 11mm via adjustable locking nut sizes.
LLT M19 5 Core Waterproof Connector Male And Female Screw Lock Iot Signal Water Environment Monitoring Connector thumbnail

M19 Threaded

LLT M19 5 Core Waterproof Connector Male And Female Screw Lock Iot Signal Water Environment Monitoring Connector

Key Features Reliable Weatherproofing: IP67/IP68 rated protection ensures stable performance in harsh outdoor, marine, or industrial environments. Solderless Installation: Features a convenient screw locking mechanism for quick field assembly without the need for specialized welding tools. High-Power Capacity: Engineered to handle up to 600V and 20A, making it ideal for high-demand LED lighting and industrial machinery. Extreme Durability: Constructed with high-quality PA66 Nylon and gold-plated brass contacts for superior corrosion resistance and conductivity. Versatile Cable Fit: Compatible with multiple cable diameters ranging from 6.3mm to 11mm via adjustable locking nut sizes.
LLT M19 Waterproof Aviation Plug Waterproof Butt Connector Screw Lock 2 Core IP68 Waterproof Connector for LED Power thumbnail

M19 Threaded

LLT M19 Waterproof Aviation Plug Waterproof Butt Connector Screw Lock 2 Core IP68 Waterproof Connector for LED Power

Key Features Reliable Weatherproofing: IP67/IP68 rated protection ensures stable performance in harsh outdoor, marine, or industrial environments. Solderless Installation: Features a convenient screw locking mechanism for quick field assembly without the need for specialized welding tools. High-Power Capacity: Engineered to handle up to 600V and 20A, making it ideal for high-demand LED lighting and industrial machinery. Extreme Durability: Constructed with high-quality PA66 Nylon and gold-plated brass contacts for superior corrosion resistance and conductivity. Versatile Cable Fit: Compatible with multiple cable diameters ranging from 6.3mm to 11mm via adjustable locking nut sizes.
LLT M19 600V 20A Waterproof Aviation Connector 2 Pin Male & Female Plug Solderless Screw Terminal IP68 Weatherproof AC/DC Power Connector thumbnail

M19 Bayonet

LLT M19 600V 20A Waterproof Aviation Connector 2 Pin Male & Female Plug Solderless Screw Terminal IP68 Weatherproof AC/DC Power Connector

Key Features Reliable Weatherproofing: IP67/IP68 rated protection ensures stable performance in harsh outdoor, marine, or industrial environments. Solderless Installation: Features a convenient screw locking mechanism for quick field assembly without the need for specialized welding tools. High-Power Capacity: Engineered to handle up to 600V and 20A, making it ideal for high-demand LED lighting and industrial machinery. Extreme Durability: Constructed with high-quality PA66 Nylon and gold-plated brass contacts for superior corrosion resistance and conductivity. Versatile Cable Fit: Compatible with multiple cable diameters ranging from 6.3mm to 11mm via adjustable locking nut sizes.
LLT M19 Circular Electrical Wire 2Pin 3 Pin Waterproof Male and Female Cable Connector for Led Garden Light thumbnail

M19 Threaded

LLT M19 Circular Electrical Wire 2Pin 3 Pin Waterproof Male and Female Cable Connector for Led Garden Light

Key Features Weatherproof Reliability: achieve IP68 waterproof rating, ensuring stable power delivery in harsh outdoor and industrial environments. High-Current Capacity: Supports up to 20A/600V, making it ideal for high-power LED drivers and outdoor lighting systems. Secure Screw Locking: Designed with a reliable screw-lock mechanism to prevent accidental disconnection from vibration or tension. Solderless Installation: Includes easy-to-use screw terminals for quick field assembly without the need for specialized soldering tools. Universal Fitment: Accommodates a wide range of cable diameters from 5.3mm to 11mm for maximum project versatility.
LLT M19 Waterproof Connector Set 2 Pin 20A 600V IP68 Aviation Plug Screw Locking Male & Female Pair for LED Power thumbnail

M19 Threaded

LLT M19 Waterproof Connector Set 2 Pin 20A 600V IP68 Aviation Plug Screw Locking Male & Female Pair for LED Power

Key Features Weatherproof Reliability: achieve IP68 waterproof rating, ensuring stable power delivery in harsh outdoor and industrial environments. High-Current Capacity: Supports up to 20A/600V, making it ideal for high-power LED drivers and outdoor lighting systems. Secure Screw Locking: Designed with a reliable screw-lock mechanism to prevent accidental disconnection from vibration or tension. Solderless Installation: Includes easy-to-use screw terminals for quick field assembly without the need for specialized soldering tools. Universal Fitment: Accommodates a wide range of cable diameters from 5.3mm to 11mm for maximum project versatility.
LLT M16 250V 15A Waterproof Connector IP67 IP68 2 3 4 Pin Assembly Cable Connector for Outdoor Lighting thumbnail

M16 Threaded

LLT M16 250V 15A Waterproof Connector IP67 IP68 2 3 4 Pin Assembly Cable Connector for Outdoor Lighting

Waterproof Connectors: 1. We have almost all the pins from 2 to 18 pin, they can transmit power and signals. 2. Good quality, they are certificated by UL,CE,TUV,CQC,RoHS,IP67/IP68. Its quality can pass other certification standards if you want to do it. 3. Both push locking and screw locking are optional. 4. Plenty of options, field assembly connector(straight through & 90 degrees), molded with cable connector(straight through, 90 degrees and T connector), USB and RJ45 connector, 2/3/4 way field assembly connector, circular/square/rhombus socket. 5. Free combination, connect them by male female or panel mount as you like. 6. OEM & ODM are always welcome
LLT 12pin Multiple Pin Low Ampere 5A 60V Electrical Waterproof Panel Mount Screw Connector thumbnail

M16 Threaded

LLT 12pin Multiple Pin Low Ampere 5A 60V Electrical Waterproof Panel Mount Screw Connector

This M16-12pin field assembly panel connector can get IP67/IP68 waterproof protection . under the normal temperature,plug the male female connector put into the 1m depth water ,after 4 hours inner connector have no immersion happened. It is very convenient to assemble . The male mate female through thread lock . attach cable by solder .We have 5.5/6.5/7.2/8.5mm grommet can fit your different diameter cable . Our factory specilize in this field around twenty five years ,we rank in the top manufacturer .We Own full sets certificate ,such as UL,TUV,CE Rohs,SAA, CCC conform to to all market ;We can provide competitive price ;Support ODM,OEM ,customized design;100% quality guarantee ,12 months warranty ;Reliable after-sales service ,salesman 24 hours on line to solve your question

FAQ

When should engineers choose waterproof circular connectors?

Use waterproof circular connectors when the project needs stable mating, clear keying, and compact round-body installation under moisture, dust, vibration, or outdoor exposure.

What should be checked first on waterproof circular connector projects?

Confirm shell size, pin count, lock style, ingress target, cable OD, and whether the interface is cable-to-cable or panel-mounted before narrowing the exact model.

Can LLT supply circular connectors together with cable or panel integration support?

Yes. LLT can support connector selection together with cable exit definition, overmold direction, panel fit review, and related harness discussion when the project requires more than a catalog-only comparison.