Best Cylindrical Connectors of 2026

Name: Elecbee SP13 Waterproof Aviation Connector
Brand: Elecbee

Harvey Wall

Last Updated: 3 Feb 2026

* We independently evaluate all recommended products and services. If you click on links we provide, we may receive compensation.

Cylindrical connectors are a type of electrical connector that are commonly used in a variety of applications, including aerospace, military, and industrial settings. These connectors feature a cylindrical shape and are designed to provide a secure and reliable connection between two electrical devices. They come in a range of sizes, configurations, and materials, and are often used in harsh environments where other types of connectors may not be suitable. Cylindrical connectors are known for their durability, resistance to corrosion, and ability to handle high levels of current and voltage.

At a Glance: Our Top Picks

#TOP 1

Elecbee SP13 Waterproof Aviation Connector

9.8

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Elecbee SP13 Waterproof Aviation Connector

#TOP1

9.8

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#TOP 2

2 Sets Industrial Waterproof Connector IP68, SP17 2 Pin Aviation Male Plug Female Socket, Screw Crimp Quick Wire Connector with Waterproof Cover

9.7

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2 Sets Industrial Waterproof Connector IP68, SP17 2 Pin Aviation Male Plug Female Socket, Screw Crimp Quick Wire Connector with Waterproof Cover

#TOP2

9.7

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#TOP 3

HangTon 0B PHG FGG 2 Pin Circular Connector Cable Plug Receptacle Male Female Contacts for Power Extension

9.5

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HangTon 0B PHG FGG 2 Pin Circular Connector Cable Plug Receptacle Male Female Contacts for Power Extension

#TOP3

9.5

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Top 10 Cylindrical Connectors

#TOP 1

Elecbee SP13 Waterproof Aviation Connector

Elecbee

EB-410-0055

blue

Elecbee SP13 Series Flight-Ready Connector, IP68 Waterproof Plug Socket plugin Compatible with Panel Mount, Includes Waterproof Cover

9.8

FTB Score

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The Elecbee SP13 Connector is designed for convenience and reliability in demanding environments. With its 3-pin configuration and IP68 waterproof rating, you can trust it to maintain a secure connection even in harsh conditions. The stable threaded connection ensures that you can easily connect and disconnect the plug without worrying about vibrations. Additionally, the high-quality materials used in its construction, such as gold-plated brass contacts, enhance conductivity and prolong the lifespan of the connector, making it a practical choice for various applications.

What We Like

Waterproof and dust-proof

High-quality materials

Stable threaded connection

Wide compatibility

#TOP 2

2 Sets Industrial Waterproof Connector IP68, SP17 2 Pin Aviation Male Plug Female Socket, Screw Crimp Quick Wire Connector with Waterproof Cover

GLDFYYDS

2 Pin

2 Sets Industrial Waterproof Connector IP68, SP17 2 Pin Aviation Male Plug Female Socket, Screw Crimp Quick Wire Connector with Waterproof Cover

9.7

FTB Score

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Features

Excellent Sealing Performance: 2 Pin Waterproof Wire Connectors Has A Tight Threaded Connection And IP68 Waterproof Rating, Equipped With Waterproof Seals, Providing Superior Protection Against Moisture, Dust And Oil Contamination

Durable Material: The Aviation Waterproof Connector Is Made Of High Quality PA66 Nylon Material, Scratch Resistant And Long Lasting Performance. The Internal Terminals Are Made Of Gold-Plated Copper Core, Oxidation Resistance, Long Service Life

Wide Application: Crimped Aviation Plug And Socket Has A Wide Range Of Uses, Which Can Be Widely Used In Communication Equipment, Computers, Underwater Equipment, Outdoor Led Lamps Lighting And So On. It Is A Reliable Choice For Various Electronic Devices.

Reliable Connection: Our Waterproof Cable Connectors Are Structurally Stable With Excellent Performance, The Connectors Are Designed For More Than 500 Cycles In Temperatures Ranging From -40°C To 85°C

Customer Support: We Offer Excellent After-Sales Support For Our Cable Connectors. Our Team Is Dedicated To Answering Any Questions Or Problems You May Have.

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#TOP 3

HangTon 0B PHG FGG 2 Pin Circular Connector Cable Plug Receptacle Male Female Contacts for Power Extension

HangTon

PHG+FGG

HangTon 0B PHG FGG 2 Pin Circular Connector Cable Plug Receptacle Male Female Contacts for Power Extension

9.5

FTB Score

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Features

Male And Female Contacts, Cable Plug And Receptacle

Circular Metal Aviation Push-Pull Self-Locking Connector

Reliable, 360 Degree Complete EMC Shielding, Shock / Vibration / Corrosion Resistance

For Medical Equipment, Test Equipment, Machinery, Audio And Video Devices, Broadcasting, Telecommunications And Military And More

Compatible With The Lemo PHG And FGG 0B 2 Pin, FGG.0B.302.CLAD32 And PHG.0B.302.CLLD32

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#TOP 4

CNLINKO YM-20 Industrial Waterproof Connector IP68 Circular Aviation Connector PBT Plastic Shell M20 2-12 Pin Flange Socket (2 Pin)

CNLINKO

YM-20-C/J02PE/SX-02-401-AMZ-EU

2 Pin

CNLINKO YM-20 Industrial Waterproof Connector IP68 Circular Aviation Connector PBT Plastic Shell M20 2-12 Pin Flange Socket (2 Pin)

9.4

FTB Score

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Features

Cable Specification: Compatible With Cables Ranging From 2.5-4.0mm² /14-12 AWG With A Cable Diameter Range Of Φ10.0~Φ12.0mm. The Contact Diameter Is Φ2.7x2. The Connector Is Designed For Over 2000 Cycles At Temperatures Ranging From -25°C To 85°C. Assembly Style: Solder-Assembly.

YM20 2-Pin Standard Set: The YM-20-C02PE-02-001 (male Plug) And YM-20-J02SX-02-401 (female Socket) Are Designed For Plug Connections With IP68 Protection (when Plugged In) And Ensure Excellent Dust And Water Resistance.

Materials: Housing Made Of High-Strength Engineering Plastic, Metal Parts Made Of Zinc Alloy (pearl Chrome-Plated) And Contacts Made Of Gold-Plated Copper Alloy. Silica Gel Seal Protects Against Moisture, Dust, And Corrosion.

Electrical Specifications: Rated For 20 A Current, 500 V AC Voltage, And 2000 V Voltage Resistance For 1 Minute. With Low Contact Resistance (500 MΩ) For Consistent Electrical Performance. Note: Avoid Powering During Insertion.

Application: Network Servers; Communication Equipment; Solar Equipment; Smart Grid; Electronic Devices; Stage Technology; Marine Equipment; Vehicle Equipment; Heavy Machinery

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#TOP 5

Xiatiaosann M12 4 Pin Male Female Aviation Connector Plugs, 4 Pin Panel Mount Wire Connector Socket, Outdoor WaterProof IP67 Type A PG7 outlet 12mm Industrial Circular Metal Connector(8 Pcs)

Xiatiaosann

NR-XT-574

Xiatiaosann M12 4 Pin Male Female Aviation Connector Plugs, 4 Pin Panel Mount Wire Connector Socket, Outdoor WaterProof IP67 Type A PG7 outlet 12mm Industrial Circular Metal Connector(8 Pcs)

9.3

FTB Score

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Features

High Quality: M12 4-Pin Male + Female Circular Aviation Connector Uses Nylon PA66 Shell, Flame Retardant Reinforcement, Anti-Vibration Locking Design, 12mm Threaded Connector.The Waterproof LED Connector Uses Cast Zinc Full Copper Nickel-Electroplated Metal Screw Sleeve, Pure Copper Gold-Plated Contacts, Excellent Conductivity, Strong And Corrosion-Resistant, Long Service Life And Strong Stability

M12 Connectors And Connection Sockets: M12 Field Wiring Connector, 4-Pin, Male+female, Straight, Type A Connection, PG7 Rear Outlet, For Cables, Threaded Connector, IP67 Waterproof.

Use In Combination: The Straight Male Connector Can Be Directly Connected To The Straight Female Connector, And The Straight Male Connector Can Be Connected To The Flange Male And Female Socket.

Parameters: Number Of Pins: 4, Cable Diameter: 4MM, 7MM, Rated Voltage: 250V, Measuring Impulse Voltage: 2500V, Rated Current: 4A, Excessive Resistance: ≤3ohm

Package Includes: 2 X 4 Pin Male Aviation Connector, 2 X 4-Pin Female Aviation Connector, 2 X 4 Pin Male Panel Mount Connector Socket, 2 X 4 Pin Female Panel Mount Connector Socket

Easy To Use: 12mm Aviation Wire Connector Plug: Easy To Quickly Connect And Disconnect Without Tools, Suitable For Single-Ended Aviation Connector Cable DIY, Allowing You To Freely Mix And Match, Even Non-Professionals Can Get Started Quickly

Application: 12mm Industrial Circular Connectors Are Widely Used In Aviation, Computers, Communications, And Electronics Industries.They Can Easily Connect Switches, Photoelectric Barriers, Flow Monitoring Devices, Sensor Devices, Actuator Equipment, And Fieldbus Components.

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#TOP 6

CNLINKO LP20 90° 3 Pin Cylindrical Connector, Waterproof Quick Connect Male Right Angle Plug Female 4-Hole Panel Mount Socket, Industrial Outdoor Equipment Electrical Circular Solder Assembly

CNLINKO

LP-20-C/J03PE/SX-03-401A-AMZEU-01-013A

3 Pin

CNLINKO LP20 90° 3 Pin Cylindrical Connector, Waterproof Quick Connect Male Right Angle Plug Female 4-Hole Panel Mount Socket, Industrial Outdoor Equipment Electrical Circular Solder Assembly

9.1

FTB Score

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Features

Standard Specifications: Capable Of Supporting 2.5-4.0mm²/14-12AWG Cable With A Diameter Of Φ10mm~Φ12mm. It Handles 20A Current, 500V Voltage, And Withstands 2000V. Contact Resistance Is 500MΩ. The Connector Is Designed For Over 2000 Cycles At Temperatures Ranging From -25°C To 85°C. Contact Diameter × Number: Φ2.7x3. Note: Avoid Charging During Insertion.

90-Degree Angled Plug & Space-Saving Design: This Set Includes A 90-Degree Angled Male Plug And A Single Or Four-Hole Female Socket With A Secure Snap-On Mechanism. Enables One-Handed Plug And Unplug For Effortless Operation. The Right-Angle Design Allows For Cleaner And More Rational Cable Routing In Confined Spaces. It Effectively Protects Cables From Sharp Bends And Stress, Reduces Space Constraints, And Extends Cable Lifespan For More Reliable Industrial Wiring.

Right-Angled Design & Wide Compatibility: The Low-Profile Right-Angle Plug Saves Space And Facilitates Wiring In Tight Areas. Ideal For Server Racks, Communication Systems, Solar Power Installations, Smart Grids, Stage Lighting, Automotive Machinery, And Heavy Equipment—enabling Cleaner And More Efficient Cable Management.

Premium Materials & Superior Protection: Constructed With A High-Strength Plastic Shell, Zinc Alloy Metal Parts, And Gold-Plated Copper Alloy Contacts For Optimal Conductivity And Corrosion Resistance. The Silicone Sealing Ring Provides IP68 Dust/water Protection (when Mated). The 90-Degree Right-Angle Plug Prevents Excessive Bending Of The Cable And Ensures Good Data Transmission.

Anti-Short & Foolproof Safety Design: The 2-5 Pin Versions Include Isolation Barriers To Prevent Short Circuits, While 7-14 Pin Models Are Equipped With Anti-Misalignment Features. This Protects The Contacts From Damage During Incorrect Mating Attempts, Enhancing Safety And Durability.

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#TOP 7

CNLINKO LP12 4-Pin Circular Connector with 1 Meter Cable Assemblies, IP68 Waterproof Industrial Electrical Connector for Outdoor Equipment Automotive Machinery, M12 Cylindrical Connectors (4 Pin)

CNLINKO

LP12-C/J04PE/SX-02-401-AMZEU-001

4 Pin

CNLINKO LP12 4-Pin Circular Connector with 1 Meter Cable Assemblies, IP68 Waterproof Industrial Electrical Connector for Outdoor Equipment Automotive Machinery, M12 Cylindrical Connectors (4 Pin)

8.9

FTB Score

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Features

Cable Specifications: Compatible With Cables Ranging From 0.34-0.5mm² /22-20 AWG With A Cable Diameter Range Of Φ4.5~Φ5.5mm. The Contact Diameter Is Φ1.0x4. Durability: ≥500 Mating/Unmating Cycle ; Temperature Rating: -25°C ~ 80°C ; Assembly Style: Solder

Product Overview With 1m Cable: The LP12-04-MP-E-1M-001 (Male Plug With A Pre-Assembled 1-Meter Cable) And LP-12-J04SX-02-401 (Female Socket), Offering Easy Simplify And Reliable Installation. Featuring An IP68 Waterproof Rating (when Mated), This Connector Ensures Reliable Performance In Medical, Industrial, And Outdoor Environments

Versatile Applications: Perfect For Use In Medical Equipment, Solar Energy Systems, Communication Devices, Stage Equipment, Servers, Vehicles, Heavy Machinery, And More. The Male Plug Included 1-Meter Cable Makes Installation Fast And Simple, Saving Time And Effort

Premium Materials: Constructed With High-Performance Engineering Plastic For The Shell, Zinc Alloy (pearl Hard Chromium) For Metal Components, And Gold-Plated Copper Alloy For The Contacts. Silica Gel Sealing Provides Superior Protection Against Moisture, Dust, And Corrosion, Ensuring Long-Term Durability

Electrical Specifications: Rated For 5A Current And 125V AC Operating Voltage. With A Withstand Voltage Of 1500V For 1 Minute, Contact Resistance Under 5.0mΩ, And Insulation Resistance Over 500MΩ, Ensuring Reliable And Stable Electrical Performance. Note: Avoid Charging During Insertion

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#TOP 8

E-WeiChat EW-LP16 Industrial Waterproof Connector IP68 Quickly Plugging Aviation Connector PBT Plastic Shell Circular Connector Fast Release Electrical Connector M16 2-9 Pin Thread Socket (3 Pin)

E-WeiChat

LP16SL-0325M01-EU

3 Pin

E-WeiChat EW-LP16 Industrial Waterproof Connector IP68 Quickly Plugging Aviation Connector PBT Plastic Shell Circular Connector Fast Release Electrical Connector M16 2-9 Pin Thread Socket (3 Pin)

8.8

FTB Score

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Features

< Cable Standards >: Cable Specification: 1.5mm²/16AWG ; Cable Diameter Range: Ф7.0~Ф9.0mm; Contact Diameter × Number: φ1.5x3 ; Durability: ≥1900 Mating/Unmating Cycle ;

Pairing Type: Male Plug + Female Socket ; Connecting Mode: One-Touch Button Plug/Unplug ; Locking Method: Automatic Insertion, Self-Locking Device ; Protection Level: IP68(2m/2h)(Mated) ; Assembly Style: Solder/Weld ;

< Widely Used >: In Various Challenging Environments. Suitable For Machinery, Medical, Servers, Photovoltaic, Energy Storage, Power Grids, Automotive, Marine, Communications, Detection, Measurement, Industrial Control, Audio-Visual Equipment, Stage Equipment, And More ;

< Material Performance >: Shell Material: High Performance PBT Plastic Material ; Temperature Range: -40°C ~ 80°C ; High Temperature Aging: 85 ℃ / 168 H ; Temperature Rise: 10A 30K; Flame Retardant Grade: UL94 V-0 ; Seal: High Quality Silicone Ring ; Contact Core: Copper Alloy (Gold Plated) ;

< Electrical Characteristics >: Rated Current: 10A ; Operating Voltage (AC.V.rms): 400V ; Puncture Test: 2500V ; Contact Resistance: ＜3mΩ ; Insulation Resistance: ＞1000MΩ ; Prohibit Pluging While Energized ;

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#TOP 9

CNLINKO LP12 2-Pin Circular Connector with 1 Meter Cable Assemblies, IP68 Waterproof Industrial Electrical Connector for Outdoor Equipment Automotive Machinery, M12 Cylindrical Connectors (2 Pin)

CNLINKO

LP12-C/J02PE/SX-02-401-AMZUS-001

2 Pin

CNLINKO LP12 2-Pin Circular Connector with 1 Meter Cable Assemblies, IP68 Waterproof Industrial Electrical Connector for Outdoor Equipment Automotive Machinery, M12 Cylindrical Connectors (2 Pin)

8.6

FTB Score

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Features

Cable Specifications: Compatible With Cables Ranging From 0.34-0.5mm² /22-20 AWG With A Cable Diameter Range Of Φ4.5~Φ5.5mm. The Contact Diameter Is Φ1.0x2. Durability: ≥500 Mating/Unmating Cycle ; Temperature Rating: -25°C ~ 80°C ; Assembly Style: Solder

Product Overview With 1m Cable: The LP12-02-MP-E-1M-001 (Male Plug With A Pre-Assembled 1-Meter Cable) And LP-12-J02SX-02-401 (Female Socket), Offering Easy Simplify And Reliable Installation. Featuring An IP68 Waterproof Rating (when Mated), This Connector Ensures Reliable Performance In Medical, Industrial, And Outdoor Environments

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#TOP 10

SinLoon 2 Pack GX16 2Pin Pigtails Electronic Cable Female Socket Wireable Molding Industrial Circular Round Receptacle Aviation Connectors 30CM/0.98Ft (2Pin)

SinLoon

GX16

30 cm

SinLoon 2 Pack GX16 2Pin Pigtails Electronic Cable Female Socket Wireable Molding Industrial Circular Round Receptacle Aviation Connectors 30CM/0.98Ft (2Pin)

8.4

FTB Score

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Features

GX16 Single Ended Cable Which Is Suitable For DIY Single-Ended Aviation Connection Wires, Allowing You To Freely Combine And Match Them, Providing Flexibility For Various Electrical Settings And Completing Work Efficiently And Quickly

GX16 2Pin Cable Is Specifically Designed For Safe Electrical Connections In Aviation, Automation And Other Industrial Systems, And Is Highly Suitable For Connecting Small Products Such As Sensors, Actuators And Switches To Industrial Automation Systems

Metal Aviation Connector Adapter Can Be Conveniently And Quickly Connected And Disconnected. Installation And Disassembly Do Not Require Tools. GX16 Cable Plug Provides A Fast And Convenient Connection Between On-Site Equipment And Terminals, Being Plug-And-Play, Flexible And Convenient

Industrial Connector Round 2 Wire Cable Is Made Of 14AWG Pure Copper Wire And High-Quality Materials, Enabling It To Withstand Harsh Environments. It Is An Ideal Choice For Industrial And Mechanical Applications, Ensuring Long-Lasting Performance And Durability

GX16 Aviation Adapter Cable With Its Threaded Locking Mechanism, Anti-Vibration Locking Design, 16mm Threaded Joint. GX16 Waterproof Industrial Connector Features Fully Copper-Plated Metal Inserts And Pure Copper Gold-Plated Contacts, Which Are Robust, Corrosion-Resistant And Durable, While Ensuring Stable And Reliable Data And Signals

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Frequently Asked Questions (FAQs)

1. What is a cylindrical connector?

A circular connector is a cylindrical, multi-pin electrical connector that contains contacts that power electrical devices, transmit data, or transmit electrical signals. A circular connector is designed to withstand harsh environments and reliably deliver data.

2. What are the 3 types of connectors?

Electrical connectors are classified into three types based on their termination ends: board-to-board connectors, cable/wire-to-cable/wire connectors, and cable/wire-to-board connectors.

3. What are round connectors called?

Circular Connector Contact Type. Eyelet Pin Eyelet Socket Less Pin Less Socket PC Tail Pin PC Tail Socket Pin Pin/Socket Socket Solder Cup Pin Solder Cup Socket Soldercup.

4. What are the 4 types of connectors?

Connectors are used between two separate sentences. There are four types of conjunctions: coordinating, correlative, subordinating, and conjunctive adverbs (discussed elsewhere).

Editor's Notes

During our cylindrical connector research, we found 306 cylindrical connector products and shortlisted 10 quality products. We collected and analyzed 3,213 customer reviews through our big data system to write the cylindrical connectors list. We found that most customers choose cylindrical connectors with an average price of £20.00.

The cylindrical connectors are available for purchase. We have researched hundreds of brands and picked the top brands of cylindrical connectors, including Elecbee, GLDFYYDS, HangTon, CNLINKO, Xiatiaosann.

Written by

Harvey Wall

Harvey Wall was born and raised in Norwich. He mastered the art of tool production and finished at the prestigious Norwich University. His area of interest include cutting tools, abrasive finishing and power tools. Harvey is always looking for ways to improve the finesse of industrial tools via his myriads of researches. He also shares some of his experiences on many platforms while writing on tool products.