Eaton ES31 Sealing Hub - Hazardous Locations
Part Number: ES31
Quick Summary
ES31 sealing hub provides explosionproof conduit sealing for hazardous locations in industrial environments. This solution addresses the chronic challenge of maintaining a reliable, code-compliant seal where space is constrained and conditions are harsh. The assembly is designed for NEC/CEC compliance and supports Class I, Division 1 and Division 2 ratings, ensuring safe operation in hazardous environments. By leveraging the 1/2" female hub and 1" male hub configuration in a compact Feraloy iron alloy body, facilities can reduce maintenance cycles and streamline installation. This product also aligns with industry expectations for durability, compliance, and lifecycle cost reduction, supporting procurement with measurable safety and reliability gains for critical electrical installations.
Product Information
Extended Description
ES31 Eaton Crouse-Hinds: Eaton Crouse-Hinds series ES sealing hub, 1/2" female hub size, 1" male hub size, Feraloy iron alloy
Product Name
Eaton Crouse-Hinds series ES sealing hub
Catalog Number
ES31
Product Length/Depth
1.56 in
Product Height
2 in
Product Width
1.56 in
Product Weight
0.4 lb
UPC
782274277011
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2
Female hub size
1/2"
Male hub size
1"
Material
Feraloy iron alloy
Crouse-Hinds series ES Explosionproof Conduit Sealing Hub and TSC Epoxy Sealing Compound catalog page
ES Explosionproof Conduit Sealing Hub and TSC Epoxy Sealing Compound UL certification
ES Explosionproof Conduit Sealing Hub and TSC Epoxy Sealing Compound UL certification
IF 1728 - ES Sealing Hubs
Eaton Specification Sheet - ES31
Feature → Business Impact → Application: The ES31 employs a 1/2" female hub and 1" male hub configuration to provide a compact, robust sealing solution that reduces enclosure footprint while maintaining a rugged seal. This translates to lower labor costs during installation and fewer reworks in tight spaces commonly found in process plants and mining facilities. Application: Use in hazardous locations requiring explosionproof integrity and space efficiency. Feature → Business Impact → Application: Feraloy iron alloy construction delivers enhanced mechanical strength and resistance to impact and wear, improving long-term enclosure integrity and minimizing downtime due to component failure. Application: Ideal for outdoor condensate exposure or environments with mechanical vibration where reliability is paramount. Feature → Business Impact → Application: NEC/CEC compliance plus Class I, Division 1 and Division 2 ratings offer regulatory confidence and simplify commissioning in facilities with strict safety standards. Application: Suitable for oil and gas, chemical processing, and power generation sites. Feature → Business Impact → Application: Compact dimensions—1.56 in length/depth and 1.56 in width, with a 2 in height—facilitate quick installation in crowded control panels and junction boxes. Application: Retrofit projects or new builds where space is at a premium. Feature → Business Impact → Application: UL and regional certifications support risk management programs and vendor qualification processes. Application: Procurement and compliance teams rely on documented approvals for audits and safety reviews. Feature → Business Impact → Application: 0.4 lb weight aids field handling and reduces shipping and onsite lifting requirements, delivering modest total cost of ownership improvements across multiple installations. Application: Large-scale deployments in industrial facilities with extensive conduit runs.
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FAQs
The ES31 sealing hub provides explosionproof conduit sealing for enclosures in hazardous locations. It connects a 1/2" female hub to a 1" male hub using a durable Feraloy iron alloy body, delivering a secure, code-compliant seal for Class I, Division 1 and 2 environments. This minimizes the risk of conduit entry points releasing hazardous atmosphere and supports NEC/CEC compliance.
ES31 features a 1/2" female hub and a 1" male hub, designed for compact installations. The body is made from Feraloy iron alloy, which provides superior strength and durability under demanding industrial conditions. The combination supports reliable sealing while withstanding mechanical stresses typical in harsh environments.
Yes. ES31 is specified under NEC/CEC standards and carries NEC hazardous ratings for Class I, Division 1 and Division 2. This configuration ensures the product meets rigorous electrical safety requirements for hazardous locations, simplifying approvals and reducing compliance risk for projects in oil, gas, chemical processing, and other hazardous industries.
Installation is straightforward in compatible enclosures. Begin by verifying the enclosure opening and hub alignment, then secure the ES31 hub to provide a tight seal around conduit entries. Refer to installation sheets such as IF 1728 for ES Sealing Hubs and the Eaton ES31 datasheet for torque guidance, recommended gaskets, and sealing compounds to ensure reliable, explosionproof performance.
The ES31 delivers long-term reliability in hazardous environments, reducing maintenance calls due to seal failures and minimizing repair downtime. Its robust construction and compact size lower installation time and enable easier future retrofits. Over multiple sites, this contributes to lower total cost of ownership while maintaining critical safety and regulatory compliance.