Watertight Bulkhead Fittings

Product Overview & Series Introduction

Les Watertight Bulkhead Fittings series (also designated as Bulkhead Series Watertight Connectors) by HYSF Subsea (Xiamen Chuida Technology Co., Ltd.) represents an elite, independently developed product line engineered specifically for secure, sealed penetration across equipment housings, internal cabins, pressure hulls, and marine pipelines[cite: 1]. As a certified high-tech enterprise driven by independent technical innovation, HYSF has developed this specialized multi-core series to overcome the technical challenges of deep-sea high-pressure deployments, successfully achieving an elite domestic substitution for imported core components and breaking long-standing international monopolies[cite: 1].

Every system in this product category is constructed using a premium metal body combined with a specialized epoxy resin potting process and a unibody High-Temperature Vulcanization (HTV) mechanism[cite: 1]. The internal cables and conductor cores are integrally vulcanized and molded directly with the metal fitting shell, establishing an absolute hermetic seal that maintains zero leakage and prevents gas or moisture migration under continuous deep-water hydrostatic loads[cite: 1]. Once installed into the chassis panel, full cable interconnection and pass-through routing are completed cleanly without requiring complex internal cabin disassembly, significantly streamlining field operations and structural layouts[cite: 1]. To satisfy an expansive array of project-specific spatial limits and pin count configurations, the series provides a comprehensive portfolio of physical form factors, including[cite: 1]:

• Micro Bulkhead Feedthrough Series (SFMCSTA1-5): Compact circular architectures optimized for low-current and signal lines, supporting 2, 3, and 4-pin configurations at 10A, or 5, 6, and 8-pin setups at 5A[cite: 1]. These feature a standard 7/16-20UNF-2A heavy-duty mounting thread profile[cite: 1].
• Standard Bulkhead Fitting Series (SFCCSTA2): Heavy-duty, robust chassis penetrators built with standard 1/2-20UNF-2A mounting thread metrics, supporting 2 to 8 pins at 10A, or 10, 12, 13, and 16 pins at 5A[cite: 1].
• Standard Bulkhead Fitting Series (SFCCSTA3 & SFCCSTA4): High-load penetrators designed with 5/8-18UNF-2A or heavy 1-14UNS threads[cite: 1]. These handle significant power loads, providing ratings such as 6 to 8 pins at 10A, 2 to 4 pins at 30A, 6 pins at 40A, up to an ultra-high 4 pins at 60A[cite: 1].
• L-Type Right-Angle Feedthroughs (SFCCRA1 to SFCCRA4 Series): Low-profile, right-angled layout solutions engineered to resolve extreme spatial height boundaries and parallel panel routing constraints without causing wire fatigue[cite: 1].
• Flat Series Hull Brackets (SFLPCC1 & SFLPCC2 Series): Specialized rectangular flat bulkhead fittings carrying an optimized installation footprint tailored specifically to height-sensitive enclosures[cite: 1].

Key Technical Specifications & Core Features

• Centralized Multi-Channel Density: Consolidates independent power feeds and multi-channel signal routing through a single hull point, optimizing core spacing limits[cite: 1].
• Deep-Sea Hydrostatic Sealing: Extensively rated and verified for standard operational working pressures up to 60MPa, guaranteeing an absolute zero-leakage security threshold at diving depths reaching 6,000 meters[cite: 1].
• Elite Metal Metallurgy: Penetrators and threaded housings are precision-machined from top-tier marine metals—including 316L Stainless Steel, Titanium Alloy, or Naval Brass—paired with specialized high-elastic fluororubber O-rings to counter intense galvanic corrosion[cite: 1].
• Optimized Electrical Insulation: Rated for a steady working operational voltage up to 550V AC/DC[cite: 1]. Delivers an insulation resistance threshold of greater than or equal to 200MΩ @ 1000V DC and an ultra-low contact resistance profile under 0.01Ω[cite: 1].
• Extreme Thermal Range Flexibility: Certified to preserve raw material flexibility, physical latch integrity, and hermetic sealing boundaries across extreme operating temperatures stretching from -60°C up to +80°C[cite: 1].

Industrial Applications & Working Conditions

Les Watertight Bulkhead Fittings Series is intentionally designed to perform under severe industrial vibrations, intense deep-water hydrostatic loads, high-salinity corrosive salt sprays, and long-term subsea deployment cycles[cite: 1]. Critical application deployment sectors include:

1. Sealed Hulls & Enclosures of Submarines and Submersibles

Acts as the primary electrical penetration barrier for manned submersibles, deep-sea subsea vehicles (AUVs), and underwater unmanned platforms[cite: 1]. It safely routes high-voltage power feeds and multi-channel telemetry streams through structural thick-walled bulkheads while completely maintaining the structural integrity of dry electronic pressure hulls[cite: 1].

2. Subsea Junction Boxes & Distribution Hubs

Extensively deployed across high-pressure sealed housings, subsea splitters, and underwater distribution pods utilized in offshore oil and gas drilling manifolds[cite: 1]. The unibody vulcanized construction and epoxy resin potting prevent catastrophic cross-cabin flooding even if an external field cable experiences a severe physical tear or tear-out strain[cite: 1].

3. Marine Scientific Research & Ocean Observation Networks

Serves as the mission-critical connection backbone for seabed monitoring arrays, hydrological stations, and underwater acoustic detection equipment (sonar platforms and hydrophones)[cite: 1]. The multi-core density permits consolidated routing of distinct low-voltage sensor lines back to central data chambers over multi-year deployment cycles without experiencing signal attenuation[cite: 1].

4. Integrated Underwater Imaging & Light Assemblies

Utilized to handle centralized high-power power loops and high-bandwidth data channels on underwater network cameras, integrated light-and-camera pods, and deep-sea LED searchlights[cite: 1]. It provides a tight, leak-proof chassis penetration that withstands severe mechanical pulling forces common during heavy-sea deployment and recovery operations[cite: 1].

Frequently Asked Questions (FAQ)