Inquiry
Form loading...
-
Phone
-
E-mail
-
Whatsapp
-
WhatsApp
Precision-engineered cable gland seals certified for explosion-proof and hazardous-area environments. Each product meets the highest international safety and waterproof standards.
A cable gland seal for explosion-proof environments is a specialized mechanical fitting designed to securely attach and seal electrical cables as they pass through enclosures, panels, or equipment housings in hazardous locations where flammable gases, vapors, dusts, or fibers may be present. Unlike standard cable glands, explosion-proof variants are engineered to prevent the ignition of surrounding atmospheres by containing any internal sparks or flames, while simultaneously providing a robust environmental seal against moisture, dust, and corrosive substances.
These components serve as a critical first line of defense in industrial safety systems. Their design must comply with internationally recognized hazardous area classification standards — including ATEX (Europe), IECEx (global), UL/NEC (North America), and CNEX (China) — ensuring they can withstand the extreme mechanical, thermal, and chemical stresses encountered in real-world explosive environments.
In certified explosion-proof systems, every cable entry point sealed by a compliant cable gland seal is a potential ignition source eliminated — protecting workers, assets, and entire industrial facilities.
The sealing mechanism typically involves multi-layer elastomeric seals, compression rings, and locking locknuts that together form a gas-tight and flame-proof barrier. Advanced designs incorporate double-seal architectures and integrated armor clamping for armored cables, making them suitable for the most demanding petrochemical, offshore, and mining installations.
For a cable gland seal to qualify for explosion-proof service, it must satisfy stringent technical benchmarks across multiple performance domains:
Ingress Protection: Minimum IP66/IP68 rating, preventing water ingress even under prolonged submersion, which is essential for offshore and underground installations.
Flame Containment: The assembly must prevent flame propagation from inside to outside the enclosure, verified through standardized explosion tests with specific gas/air mixtures.
Temperature Classification: Surface temperatures must remain below the ignition temperature of the surrounding atmosphere, classified from T1 (450°C) to T6 (85°C).
Material Compatibility: Sealing compounds and body materials must resist chemical attack from oils, solvents, acids, and alkalis present in the target environment.
Mechanical Strength: Resistance to vibration, impact, and cable pull-out forces that occur during equipment operation and maintenance activities.
Leading certifications for explosion-proof cable gland seals include ATEX Directive 2014/34/EU, IECEx IEC 60079 series, UL 2225 / UL 886, and IP68 per IEC 60529. Products from Zhejiang Hongxiang Connector Co., Ltd. carry all major certifications, ensuring global market access and compliance with the strictest safety regulations.
Our explosion-proof cable gland seals are engineered with advanced materials and precision manufacturing to deliver unmatched reliability in hazardous industrial environments.
Fully certified to ATEX Directive 2014/34/EU and IECEx standards, qualifying for use in Zone 1, Zone 2, Zone 21, and Zone 22 hazardous areas worldwide. Certification documentation is traceable and available upon request.
Dual-layer elastomeric seals provide IP68-rated protection, withstanding continuous submersion at depths up to 10 meters. Ideal for subsea cable entries, flood-prone industrial zones, and washdown environments.
Available in 316L stainless steel, nickel-plated brass, and high-grade nylon PA66/PA12 — each material selected for optimal performance in corrosive, high-temperature, or weight-sensitive applications.
Internal seal geometry prevents flame propagation through the cable entry point. Engineered to contain internal ignition events and prevent transmission to the external explosive atmosphere.
Integrated strain relief and anti-bending designs protect cable insulation from mechanical fatigue caused by continuous vibration, flexing, and thermal cycling — critical in rotating machinery and mobile equipment.
Available in metric (M16–M63), NPT, PG, and G (BSP) thread forms, enabling seamless integration with global equipment standards and enclosure types across diverse industrial markets.
Zhejiang Hongxiang Connector Co., Ltd. stands at the forefront of explosion-proof cable gland seal manufacturing, combining scale, precision, and global certification capability.
From upstream oil extraction to offshore wind turbines, explosion-proof cable gland seals are indispensable safety components across a wide spectrum of hazardous industrial environments.
In petroleum refineries, offshore drilling platforms, and LNG terminals, flammable hydrocarbon vapors create persistent Zone 1 and Zone 2 hazardous areas. Explosion-proof cable gland seals are installed at every electrical penetration point — from junction boxes and motor terminal boxes to control panels and instrumentation enclosures — providing the gas-tight barrier that prevents catastrophic ignition events. ATEX/IECEx-certified stainless steel glands are preferred for their resistance to H₂S, chlorides, and seawater corrosion in offshore environments.
Chemical processing facilities handle volatile organic compounds, flammable solvents, and reactive gases that demand the highest level of cable entry protection. Explosion-proof cable gland seals in these environments must also demonstrate chemical compatibility with aggressive media including acids, alkalis, and organic solvents. Nickel-plated brass and 316L stainless steel variants with EPDM or silicone seals are widely specified for their combined chemical resistance and explosion containment performance.
Underground coal mines represent one of the most challenging environments for electrical installations, with methane (firedamp) and coal dust creating explosive atmospheres throughout the workings. Mining-grade explosion-proof cable gland seals must meet additional requirements for dust ignition prevention (Zone 21/22), mechanical robustness against rock falls and heavy equipment impacts, and resistance to mine water ingress. Armored cable gland variants with dual IP68 certification are the standard specification for underground mining electrical systems globally.
Offshore oil platforms, FPSO vessels, and marine terminals combine explosive atmosphere hazards with extreme environmental exposure — saltwater spray, high humidity, UV radiation, and mechanical vibration from wave action and machinery. Explosion-proof cable gland seals for marine service must meet both ATEX/IECEx and marine classification society requirements (DNV, Lloyd's Register, ABS). Stainless steel IP68 glands with double-compression sealing systems are the preferred solution for deck and machinery space installations.
The rapid expansion of wind energy, solar photovoltaic, and hydrogen production facilities has created significant new demand for explosion-proof cable gland seals. Hydrogen electrolyzers and fuel cell systems operate with pure hydrogen — an extremely flammable gas with a wide flammability range — requiring the highest-grade explosion-proof cable entries. Offshore wind turbine nacelles and transformer platforms also require marine-rated explosion-proof glands for their electrical penetrations. Hoonsun's product range is fully qualified for photovoltaic and new energy applications.
Modern rail transit systems, including metro networks and high-speed rail infrastructure, require explosion-proof cable gland seals in tunnels, substations, and rolling stock where fuel vapors or electrical arc hazards exist. Heavy industrial applications — including steel mills, aluminum smelters, and automotive manufacturing plants — similarly demand robust cable entry solutions that combine explosion protection with resistance to high temperatures, metal dust, and mechanical shock. IATF16949-certified manufacturing processes ensure consistent quality for automotive supply chain customers.
The global explosion-proof equipment market is undergoing rapid transformation, driven by tightening safety regulations, industrial digitalization, and the green energy transition. Cable gland seal technology is evolving in parallel.
The global explosion-proof equipment market was valued at over USD 8 billion in 2023 and is projected to exceed USD 14 billion by 2030, growing at a CAGR of approximately 8.5%. Cable gland seals represent a significant and fast-growing segment within this market, driven by expanding oil & gas exploration, new chemical plant construction in Asia and the Middle East, and stringent regulatory enforcement in developed markets. China's domestic market is particularly dynamic, with major investments in chemical industrial parks and offshore energy infrastructure creating sustained demand for certified explosion-proof cable entry solutions.
The integration of IoT sensors, wireless monitoring systems, and digital twin technologies into hazardous area electrical installations is driving demand for more sophisticated cable gland seal designs. Smart explosion-proof glands with integrated cable identification tags, RFID chips, and condition monitoring sensors are emerging as next-generation products. These intelligent components enable real-time monitoring of seal integrity, cable temperature, and mechanical stress — providing predictive maintenance capabilities that significantly reduce unplanned downtime in critical process plants.
The global transition to renewable energy is creating entirely new application categories for explosion-proof cable gland seals. Green hydrogen production facilities, battery energy storage systems (BESS), offshore wind farms, and biogas plants all generate explosive atmosphere hazards that require certified cable entry solutions. This represents a structural growth opportunity for manufacturers with broad certification portfolios and the technical capability to develop application-specific solutions for emerging energy technologies.
Global regulatory frameworks for hazardous area equipment are progressively harmonizing around IEC 60079 series standards, creating opportunities for manufacturers with internationally recognized certifications to access multiple markets simultaneously. The adoption of IECEx mutual recognition agreements between major industrial nations is simplifying market entry for certified products. Simultaneously, increasing enforcement of explosion-proof equipment regulations in emerging markets — particularly in Southeast Asia, India, and the Middle East — is driving demand for properly certified cable gland seals to replace previously unregulated products.
Material science advances are enabling the development of cable gland seals with superior performance characteristics. High-performance polymers such as PEEK and PPS are being introduced for extreme temperature applications, while advanced elastomers including FFKM (perfluoroelastomer) seals provide unprecedented chemical resistance for the most aggressive process environments. Nano-composite coating technologies are extending the service life of metallic gland bodies in corrosive marine and chemical environments, reducing total lifecycle costs for end users.
The COVID-19 pandemic and subsequent supply chain disruptions accelerated a global trend toward supply chain localization and dual-sourcing strategies for critical safety components. Leading industrial companies are increasingly qualifying multiple certified suppliers for explosion-proof cable gland seals, with a preference for manufacturers combining international certification capability with large-scale production capacity and rapid delivery performance. Chinese manufacturers with ATEX/IECEx certification, such as Zhejiang Hongxiang Connector Co., Ltd., are well-positioned to serve as strategic supply partners for global industrial customers.
Founded in 2006, Zhejiang Hongxiang Connector Co., Ltd. is rooted in Yueqing, Zhejiang — a national hub for precision electrical manufacturing in China. After nearly two decades of dedicated development, the company has evolved into a large modern industrial connectivity solutions provider integrating R&D and design, large-scale intelligent manufacturing, global sales, and one-stop services. It stands as a benchmark enterprise of considerable scale and influence in China's cable gland and connector industry, and a key player among national high-tech enterprises.
Boasting a modern intelligent manufacturing industrial park, the company operates a standardized production workshop of over 10,000 square meters, equipped with multiple high-precision automated production lines, CNC machining centers, and a full-process quality control laboratory, establishing an industry-leading large-scale manufacturing system. With a core team of more than 300 professionals — over 30% of whom are R&D and quality management personnel — its annual production capacity exceeds 80 million units.
Its core product portfolio includes metal cable glands, nylon cable glands, waterproof cable glands, explosion-proof connectors, conduit fittings, and various customized connecting accessories. These products serve high-end sectors such as industrial electrical equipment, new energy equipment, rail transit, shipbuilding and heavy industry, construction machinery, military supporting facilities, and communication & industrial control.
Adhering to stringent manufacturing standards and uncompromising quality requirements, the company has obtained a series of internationally recognized certifications, including ISO9001, IATF16949 automotive quality management system, CE, UL, ATEX explosion-proof certification, RoHS, and IP68 high-protection rating. Its core technologies and product performance have reached international advanced levels, with nearly 100 invention and utility model patents to its name, continuously driving technological upgrading across the industry.
From a small waterproof brass cable gland workshop in 2006 to a globally certified explosion-proof cable gland seal manufacturer — two decades of continuous innovation and growth.
Our explosion-proof cable gland seals are backed by a comprehensive portfolio of internationally recognized certifications, ensuring compliance with global safety regulations and enabling seamless market access across all major industrial regions.
Each certification represents our commitment to manufacturing explosion-proof cable gland seals that meet the most demanding international safety and quality standards. Our full-process quality control laboratory ensures every product shipped meets or exceeds certification requirements.
View All Certificates →
The company currently has more than 120 employees, more than 200 production equipment, and is equipped with a professional sales and management team, committed to improving production efficiency and product quality for explosion-proof cable gland seal manufacturing.
Mechanical Equipment
Mechanical Equipment
Mechanical Equipment
Mechanical Equipment
Mechanical Equipment
Mechanical Equipment
Testing Room
Product Stacking
Explore our full product lineup — each cable gland seal solution is engineered for specific explosion-proof application requirements, certified to international standards, and manufactured to deliver long-term reliability in the most demanding hazardous environments.
