Eaton Crouse-Hinds EYSX81 Expanded Fill Fitting - Hazardous
Part Number: EYSX81
Quick Summary
EYSX81 Expanded Fill Sealing Fitting is a high-performance conduit seal designed for hazardous locations. It provides robust protection for penetrations in Class I/II/III environments, helping prevent dust, moisture, and arc-related hazards. Engineers value its NEC/CEC compliance and UL certifications for North American installations, reducing project risk and approvals time. The unit supports vertical or horizontal sealing and uses a robust Feraloy iron alloy or ductile iron body, delivering durable performance in demanding conditions. With a 3-inch trade size and Group B rating, it integrates seamlessly with standard conduit systems while simplifying installation, replacement, and future maintenance—driving reliability, safety, and long-term cost efficiency.
Product Information
Extended Description
EYSX81 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EYSX expanded fill sealing fitting, Female, Feraloy iron alloy and/or ductile iron, Vertical or horizontal, Group B rated, 3"
Product Name
Eaton Crouse-Hinds series EYSX expanded fill sealing fitting
Catalog Number
EYSX81
Product Length/Depth
5.25 in
Product Height
9.75 in
Product Width
5.25 in
Product Weight
24 lb
UPC
782274943268
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
Gender
Female
Trade size
3"
Sealing position
Vertical or horizontal
Material
Feraloy iron alloy Ductile iron
Special features
Group B rated
Crouse-Hinds series EYSX Expanded Fill Explosionproof Conduit Sealing Fittings catalog page
EYSX Expanded Fill Explosionproof Conduit Sealing Fittings UL certification
EYSX Expanded Fill Explosionproof Conduit Sealing Fittings UL certification
IF 288 - EYSX and EYDX Expanded Sealing Fitting
Eaton Specification Sheet - EYSX81
Expanded fill sealing is a robust, explosion-proof design that provides a hermetic seal for conduit penetrations in hazardous environments. This reduces ingress of dust, moisture, and corrosive agents, delivering lower leakage risk and extended service life. The material choice—Feraloy iron alloy or ductile iron—offers high strength and corrosion tolerance, which translates to longer maintenance intervals and improved uptime in demanding plants. Vertical or horizontal sealing flexibility saves installation time in tight panels and complex layouts, enabling faster commissioning and easier future retrofits. The 3" trade size and Group B rating simplify integration with standard conduit systems while preserving compliance with NEC/CEC requirements. Together, these features support safety, regulatory compliance, and lower lifecycle costs across chemical processing, refining, and mining operations.
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FAQs
When installing the EYSX81, confirm the 3 in trade size, ensure the conduit and enclosure ratings match the hazardous location requirements, and choose vertical or horizontal sealing as needed. Follow Eaton’s IF 288 instructions, use proper gaskets, tighten to the recommended torque, and inspect the seal during commissioning to verify integrity.
Yes. The EYSX81 is rated for NEC/CEC environments with Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III locations. UL certifications support cross-border approvals, and its explosionproof design keeps penetrations sealed under demanding service conditions in petrochemical, refining, and mining environments.
The EYSX81 uses Feraloy iron alloy and/or ductile iron, delivering high strength, impact resistance, and corrosion tolerance in aggressive environments. This material pairing supports long-term sealing performance, reduces frequency of maintenance, and withstands extended exposure to dust, moisture, and chemical contaminants common in hazardous locations. It also aligns with Group B ratings for gas or vapor areas, aiding compliance.
EYSX81 is designed to meet NEC/CEC hazardous location requirements and carries UL certifications for North America. The 3" trade size and vertical/horizontal sealing options simplify compliance auditing, while Group B rating and certified materials help ensure safe operation across Class I, II, and III locations. This reduces risk during commissioning and ongoing inspections in industrial facilities.
Although initial cost may be higher than nonexplosionproof options, the EYSX81 reduces maintenance frequency and replacement downtime in hazardous zones. Its durable materials, certified ratings, and reliable sealing minimize leak-related incidents, improve safety compliance, and lower total cost of ownership over the facility lifecycle by avoiding costly shutdowns and facilitating faster audits.