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Waterproof Circular Connectors: construction and selection data
Reorganized from the applicable LMConn source-catalog pages. Final dimensions, contact ratings, keying and wiring remain controlled by the approved drawing.
Mechanical and environmental data
- Ingress protection
- Depends on selected body, seal and panel interface
- Mating endurance
- Confirm for the selected contact system
- Vibration
- Confirm against the approved application specification
- Mechanical shock
- Confirm against the approved application specification
- Salt-spray reference
- Material and finish dependent
- Temperature reference
- Connector, contact and cable material dependent
- Shielding reference
- Construction and cable dependent
Construction range
long straight plug, short straight plug, right-angle plug, internal fixed receptacle, external fixed receptacle, external fixed short receptacle, long-pin PCB receptacle, floating cable receptacle.
- Select plug, free receptacle, fixed receptacle, panel or PCB format.
- Confirm straight or right-angle cable exit and available installation space.
- Match the pin count, insert orientation, contact gender and keying to the mating component.
- Define solder, crimp, PCB or factory-molded cable termination.
- Release cable diameter, shielding, jacket, pin map and required tests on the drawing.
From connector format to a controlled configuration
- Body stylePlug or receptacle, straight, right-angle, panel or PCB construction.
- Key and shellKey orientation and shell-size family establish mechanical compatibility.
- InsertContact arrangement, contact gender and pin numbering define the electrical interface.
- MaterialsShell finish, insulator and contact material are selected for environment and duty.
- TerminationSolder, crimp, PCB, collet, cable nut or overmold completes the released build.
What Waterproof Circular Connectors are designed to solve
The best result comes from matching the connector and cable to the complete system—not selecting by diameter or appearance alone. This page organizes the decisions an engineer, buyer or system integrator needs to make before requesting a drawing or quotation.
LMConn groups compatible formats by locking method, interface size, contact arrangement, installation method and cable construction. This makes it possible to compare standard options while keeping project-specific details such as pin mapping, cable length, labels and validation requirements under controlled revision.
Available product directions
F Series IP68
Use this configuration when the equipment layout and mating interface call for f series ip68. Confirm the exact drawing, electrical limits and mating component before release.
K Series IP66-IP68
Use this configuration when the equipment layout and mating interface call for k series ip66-ip68. Confirm the exact drawing, electrical limits and mating component before release.
W Series IP68
Use this configuration when the equipment layout and mating interface call for w series ip68. Confirm the exact drawing, electrical limits and mating component before release.
M-series IP65-IP67
Use this configuration when the equipment layout and mating interface call for m-series ip65-ip67. Confirm the exact drawing, electrical limits and mating component before release.
Waterproof RJ45
Use this configuration when the equipment layout and mating interface call for waterproof rj45. Confirm the exact drawing, electrical limits and mating component before release.
Catalog-derived parameters with original LMConn visuals
The following technical values are taken from the supplied source manuals rather than inferred from general connector practice. The accompanying image is an original LMConn presentation visual and is not a model-specific engineering drawing. Family-level data summarizes the catalog; ordering dimensions and electrical limits must still be checked against the exact model row and contact layout.
| Shell sizes shown | 0F, 1F, 1.5F, 2F, 3F |
|---|---|
| Protection rating | IP68 |
| Shell sizes shown | 0K, 1K, 2K, 3K, 4K |
| Contact count | 2-30 contacts |
| Shell sizes shown | 0W, 1W, 2W, 3W, 4W |
| Contact count | 2-32 contacts |
Product appearance varies by shell size, contact layout, mounting and cable configuration. Request the current model drawing and approved sample for final verification.
Engineering selection guide
- Define water jet or immersion. Record the requirement in the interface-control drawing or RFQ so it can be verified.
- Confirm mated and unmated condition. Record the requirement in the interface-control drawing or RFQ so it can be verified.
- Specify depth and duration where relevant. Record the requirement in the interface-control drawing or RFQ so it can be verified.
- Match cable OD to the gland. Record the requirement in the interface-control drawing or RFQ so it can be verified.
- Review material and corrosion exposure. Record the requirement in the interface-control drawing or RFQ so it can be verified.
Information that controls the design
| Decision | Questions to answer | Why it matters |
|---|---|---|
| Electrical | Signal, protocol, voltage, current, contact count and shielding? | Controls insert layout, contact size, cable and test plan. |
| Mechanical | Mounting, straight/angle exit, panel thickness, mating access? | Controls envelope, cutout and serviceability. |
| Environment | Dust, water, chemicals, temperature, vibration and mating cycles? | Controls sealing, material and strain-relief choices. |
| Cable | Static, flex, torsion, conductor size, jacket and outside diameter? | Controls backshell, gland, bend radius and lifetime. |
| Quality | Inspection, electrical test, labels, traceability and packaging? | Creates an objective acceptance standard. |
Important: Ratings differ by exact part number, contact layout, cable and assembly condition. Values shown on a family page are selection guidance, not a substitute for the approved product drawing and datasheet.
Typical applications and design priorities
Outdoor equipment
For outdoor equipment, engineers normally prioritize connection security, routing space and service access. Document the mating part and operating conditions so the connector, cable and termination can be evaluated as one system.
Washdown systems
For washdown systems, engineers normally prioritize signal integrity, environmental protection and repeatable installation. Document the mating part and operating conditions so the connector, cable and termination can be evaluated as one system.
Marine instruments
For marine instruments, engineers normally prioritize connection security, routing space and service access. Document the mating part and operating conditions so the connector, cable and termination can be evaluated as one system.
Environmental monitoring
For environmental monitoring, engineers normally prioritize signal integrity, environmental protection and repeatable installation. Document the mating part and operating conditions so the connector, cable and termination can be evaluated as one system.
Mobile machinery
For mobile machinery, engineers normally prioritize connection security, routing space and service access. Document the mating part and operating conditions so the connector, cable and termination can be evaluated as one system.
How to compare candidate products
Begin with non-negotiable interface requirements, then compare environmental and assembly details. Do not use a single headline rating as the sole decision. A suitable candidate should match the mating geometry, contact map, electrical load, cable construction, mounting envelope and maintenance method.
For replacement projects, send photographs only as supporting information. Measurements, existing part numbers, panel cutouts and pin assignments are needed because many circular connectors have similar external shapes. For new designs, reserve space for the connector body, coupling action, minimum cable bend radius and an operator’s hand or assembly tool.
RFQ checklist
- Target quantity, prototype quantity and annual demand.
- Connector family, mating component or interface drawing.
- Contact count, gender, coding, keying and pin assignment.
- Voltage, current, signal type, network protocol and shield strategy.
- Mounting method, panel thickness and available installation space.
- Cable type, length, conductor size, flex requirements and jacket material.
- Ingress protection, temperature, vibration and chemical exposure.
- Required tests, labeling, documentation and packaging.
Frequently asked questions
What is Waterproof Circular used for?
Waterproof searches need a cross-family comparison, but the final choice must still specify water exposure, mating state, panel seal and cable entry. Common uses include outdoor equipment, washdown systems, marine instruments. Final suitability depends on the selected part number and operating conditions.
How do I select the correct waterproof connector?
Start with the mating interface, electrical function and environment. Then confirm mounting, contact layout, termination, cable diameter and keying. The selection checklist on this page captures the minimum information needed for an engineering review.
Are all waterproof connector products interchangeable?
No. Products that look similar may differ in thread, shell size, keying, contact layout, insert orientation, sealing and dimensions. Always compare the complete dimensional drawing and mating-part definition.
Which specifications should I send for a quotation?
Send quantity, drawings or mating part, contact count, pinout, voltage and current, signal or protocol, cable type and length, environmental rating, mounting style and any testing or labeling requirements.
Can LMConn configure a custom version?
Configuration can cover contact layout, cable length, connector orientation, pin mapping, shielding, overmolding, labels and packaging where technically feasible. A drawing review is required before production.
How is the final part verified?
Verification should be defined by the project and may include dimensional inspection, continuity, insulation resistance, contact resistance, high-potential testing, shield continuity and visual checks. Required tests must be agreed in the specification.