TSI INOX Conduits presents our premium Stainless Steel EYS Explosion-Proof Sealing Fitting, a critical safety component for electrical installations in hazardous and classified locations. Manufactured from premium SS316 (CF8M) stainless steel and featuring a mirror polished finish, our EYS sealing fittings provide an essential physical barrier that prevents the passage of gases, vapors, or flames from one portion of an electrical installation to another .
The EYS (Explosion-Proof Sealing Fitting) is specifically designed for use in NEC/CEC Class I, II, and III hazardous locations to seal off conduit systems and prevent explosions from propagating through the raceway and igniting outside atmospheres . When properly installed and filled with a UL-listed sealing compound, these fittings create a physical barrier that limits the passage of vapors and gases throughout the conduit system . Whether you are installing in petrochemical refineries, chemical processing plants, offshore platforms, or food processing facilities, TSI's stainless steel EYS fittings deliver the quality, safety, and code compliance your project demands
Acetylene, hydrogen, ethylene, propane, and other flammable gases and vapors
Metal dusts, coal dust, flour, starch, and other combustible du
Combustible fibers and flyings such as cotton, sisal, and jute
| Specification | Details |
|---|---|
| Standard | UL 1203 – Explosion-Proof and Dust-Ignition-Proof Equipment |
| CSA Standard | CSA C22.2 – Explosion-Proof Enclosures |
| Material Options | Body: 316SS (CF8M) / Plug: 316SS |
| Finish | Mirror Polished / "Brite" Finish – Body |
| Thread Type | Female NPT (National Pipe Taper) – Machined Tapered Female Threads |
| Sealing Position | Vertical and Horizontal Installations |
| Raintight Rating | NEMA 4X – Corrosion-resistant and watertight |
| Trade Sizes | ½" through 4" |
TSI EYS sealing fittings meet or exceed the following hazardous location standards:
NEC/CEC Hazardous Location Ratings
| Classification | Rating |
|---|---|
| Class I, Division 1 & 2 | Groups A, B, C, D – Flammable Gases and Vapors |
| Class II, Division 1 & 2 | Groups E, F, G – Combustible Dusts |
| Class III | Combustible Fibers and Flyings |
Certified for hazardous locations, providing superior safety and reliability in explosive and combustible environments. The rugged construction restricts the passage of gases, vapors, or flames from one portion of the electrical installation to another, limiting explosions to the sealed-off enclosure and preventing "pressure piling" in conduit systems
Our EYS sealing fittings are manufactured from premium 316 stainless steel (cast CF8M), providing:
The mirror polished finish provides:
EYS sealing fittings are designed for installation in both vertical or horizontal positions, providing maximum flexibility for any conduit layout. The cover with opening for sealing compound
The large opening allows for easy packing and setup of sealing compound and fiber dam, simplifying installation and ensuring proper seal formation.
EYS sealing fittings serve a critical safety function in hazardous location installations. When properly installed and filled with a UL-listed sealing compound, they create a physical barrier that
UL 1203 - Explosion-Proof and Dust-Ignition-Proof Electrical Equipment for Hazardous Locations
CSA C22.2 Listed - Explosion-Proof Enclosures
Group B Rated - Suitable for hydrogen and other Group B gases
NEMA 4X - Corrosion-Resistant Enclosures
cULus Listed - Certified for Canada and United States
RoHS Compliant - Restriction of Hazardous Substances
TSI INOX Conduits provides a comprehensive stainless steel hazardous location system:
TSI INOX Conduits manufactures every EYS sealing fitting using premium 316 stainless steel and state-of-the-art production processes, ensuring consistent dimensions, accurate threading, and flawless mirror polished finishes in every product .
Based in India with a worldwide export network, TSI delivers stainless steel hazardous location conduit solutions to projects across North America, Europe, the Middle East, and beyond.
Our engineering team provides application assistance, code compliance guidance, and custom solutions to meet your exact project specifications—from material selection to installation best practices.
TSI INOX Conduits specializes in stainless steel hazardous location solutions for demanding industries, ensuring our products meet the unique requirements of each sector.
EYS Explosion-Proof Sealing Fitting
316SS (CF8M) Body and 316SS Plug
Mirror Polished / Brite Finish
NPT (National Pipe Taper)
Vertical or Horizontal
½", ¾", 1", 1¼", 1½", 2", 2½", 3", 4"
Group B (for hydrogen and other Group B gases)
Individually boxed to protect mirror polished finish
Sealing fitting body, plugs, and sealing compound opening cover
Contact us today to discuss your requirements, request samples, or receive a competitive quote for bulk EYS sealing fittings.
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