SP28/SD28 Square Flange Connector Dimensions and Materials
SP28 / SD28 2-26 Pins Flange Connector IP68 Waterproof
The SP28 / SD28 IP68 Waterproof Connector Series is designed for industrial systems that require high pin capacity, stable transmission, and reliable environmental protection within a single connection interface. Supporting configurations from 2 to 26 pins, this series suits applications ranging from basic power delivery to complex integrated control systems.
Built with a rugged circular structure and industrial-grade sealing, the SP28 / SD28 series is intended for equipment operating under demanding conditions where connection stability and long-term durability are essential.
Selecting the Right Pin Configuration
Different industrial systems require different connection architectures. Instead of limiting equipment design to a fixed interface, the SP28 / SD28 series provides scalable connectivity options across multiple application levels.
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Low Pin Configurations (2-4 Pins): Suitable for stable power supply and basic electrical transmission.
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Medium Pin Configurations (5-12 Pins): Ideal for integrated power and signal systems used in automation and intelligent equipment.
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High Pin Configurations (13-26 Pins): Designed for complex multi-signal communication, data transmission, and centralized control systems.
This flexibility allows engineers to simplify equipment structure while improving connection efficiency and reducing the number of interfaces required.
Environmental and Mechanical Reliability
Industrial systems often operate under vibration, dust, humidity, and continuous working cycles. The SP28 / SD28 series is developed to maintain stable performance in these challenging conditions.
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IP68 Waterproof Protection: The sealing structure provides reliable protection against water and dust intrusion, helping ensure stable operation in outdoor and industrial environments.
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Robust Circular Housing: The reinforced connector body improves mechanical strength and long-term durability during repeated use.
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Stable Electrical Contact System: Precision-engineered contacts ensure reliable conductivity and minimize signal loss or connection instability.
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Industrial-Grade Reliability: Designed for long service life under continuous operation and demanding environmental conditions.
Manufacturing and Quality Assurance
A high-performance connector depends not only on design but also on manufacturing capability. We are a professional connector manufacturer with more than 15 years of experience in waterproof connectors and cable assembly production, serving industries such as automation, energy, transportation, communication, medical equipment, and smart manufacturing.
Our factory operates a complete in-house production system, including:
- Mold development and tooling production
- Zinc alloy die-casting
- CNC machining and precision processing
- Injection molding
- Connector assembly and cable integration
By controlling the entire production process internally, we ensure stable product consistency, faster lead times, reliable quality management, and better support for customized projects.
Each connector undergoes comprehensive inspection procedures before shipment, including waterproof sealing verification, electrical conductivity testing, plugging and mating cycle testing, mechanical durability inspection, and dimensional precision verification.
Our products are manufactured under ISO9001 quality management systems and comply with international certifications including CE and RoHS.
Customization for Industrial Projects
Different equipment requires different connection solutions. We provide flexible OEM and ODM services, including pin configuration customization, cable assembly integration, shielded and anti-interference structures, housing and structural optimization, and application-specific connection solutions. Our engineering team supports customers from prototype development to mass production.
Typical Application Industries
- Industrial automation systems
- Outdoor power and communication equipment
- Smart manufacturing devices
- Energy and electrical systems
- Medical and laboratory equipment
- Transportation and control systems
Inquiry Checklist for Ordering
To ensure the correct SP28 / SD28 connector configuration for your project, please prepare the following information when contacting us:
- Required pin count and gender (male or female)
- Mating-side connector requirement or interface drawing
- Cable outside diameter and conductor size
- Electrical load (current and voltage)
- Environmental conditions (temperature, humidity, chemical exposure)
- Order quantity and target delivery schedule
For related flange connector options, see the SP28/SD28 Square Flange Connector Dimensions and Materials. For lower pin-count flange alternatives, review the SD16/SP16 2-9 Pins Flange Connector IP68 Waterproof.
Contact Us
We provide samples, technical consultation, and customized production solutions based on your project requirements. Contact us today for professional support and competitive quotations.
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Contact Diameter(mm)
IP Rating
Shell Material
Termination
Rated Current(A)
Certification
Tel: +8619924482730
Email: info@kmydconnector.com
MP/WhatsApp: +8619924482730
Manufacturer Address:Baoan District, Shenzhen City, Guangdong Province,China
Used SD16 on my small air compressor’s control line. Thread lock holds super well, no loose connections from vibration. IP68 lives up to the hype!ShoeLover247 2026-02-02
Used SD16s on our control panels. The threaded lock is tight, and they’ve held up to dust and vibration. No issues in 3 months—highly recommend.FlashFindsShopper 2026-02-02
These SD16 connectors are perfect for my outdoor cameras. The waterproof seal keeps rain out, and the 8-core version handles power + video easily. Super quick to install!ShopAndSmile 2026-02-02
Just installed these for my garden LED spotlights—so easy to wire up, and the waterproof seal is tight. Rained heavy 2 days later, zero issues. Worth every penny!HomeGoodsGuru 2026-02-02