nVent EXAS250SS6 - Hole seal M75
nVent

EXAS250SS6

UPC: 783510287887


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Installation Instructions

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Overview

The nVent EXAS250SS6 is a Type 316 stainless steel M75 hole seal designed for hazardous locations. This seal is certified for ATEX Sira 14ATEX3233U (Ex e IIC Gb, Ex tb IIIC Db) and IECEx IECEX SIR 14.0073U (Ex e IIC Gb, Ex tb IIIC Db), ensuring compliance in Zone 1/2 environments. It effectively seals cable entries in bare metallic, smooth-surfaced enclosures, mounting on flat surfaces with enclosure wall thicknesses from 1.46 mm (0.0576 in) to 3.2 mm (0.13 in). Constructed with Type 316 stainless steel outer plates and Type 304 stainless steel inner plates, the EXAS250SS6 offers robust material integrity. The integrated silicone gasket provides IP66 protection against water and dust ingress, maintaining this rating in increased safety hazardous locations. It also meets NEMA/EEMAC Type 3R, 4, 4X, 12, and 13 ratings. The UL 508A Component Recognized status further validates its suitability for industrial applications. Operating temperature range is -55°C to 180°C. SKU: EXAS250SS6. Manufacturer: nVent. Country of Origin: US.
  • Secure sealing with silicon rubber gasket to protect against water and dust ingress in extreme temperature applications ranging from -55 C (-67 F) to 180 C (356 F)
  • Seal pushbutton holes, conduit openings and knockout openings against dust, dirt, oil and water
  • Easy installation in enclosure cutouts with self-centering hole seals
  • Hole seals are available in metric and english standard hole sizes
  • Hole seals are available in metric and english standard hole sizes

Specifications

Accessory Type
Hole Seals
Application
Hazardous Environments
Assembly Diameter
2.33 in
Assembly Diameter
3.64 in
Color
Unpainted
Finish
Brushed
Fits
2-1/2in. Conduit or M75
Hole Diameter
.33 in
Hole Diameter
2.952-3.051 in
Ip Rating
IP66/IP67
Material
Stainless Steel 316L
Material
Self-centering polymer
Material
SS Type 316;Stainless Steel 316L
Modification Services
Yes
Mounting Type
Self-centering
Size
3.6457 x3.6457 x0.6811 in
Size
2.50in M75
Thread Size
M75
Type
External Mounting for Industrial Enclosures
Type
Other Accessories
Weight
0.1 lb
Works With
NEMA / IEC
Package Dimensions (L x W x H)
7.25 IN x 5 IN x 1 IN
Package Dimensions (L x W x H)
18.415 cm x 12.7 cm x 2.54 cm
Package Weight (Imperial)
0.100 L
Package Weight (Metric)
0.045 kg
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How to Install the EXAS250SS6 Hole Seal

This guide provides step-by-step instructions for installing the EXAS250SS6 Hole Seal on a metallic enclosure to maintain an IP66 rating.

Estimated time: 30m

Tools needed:

Screwdriver, 3/8 in. hex driver or wrench

Supplies needed:

Mounting screws, Gasket, Outer plate, Retainer plate, Hex nut

  1. Check hole size

    Verify the hole size in the enclosure is within the specified range of 2.952 - 3.051 inches. Clean and de-burr the hole, ensuring the edge is at least 12mm from the edge of the enclosure gland plate.

  2. Mount the gasket

    Place the gasket onto the outer plate, ensuring it is properly aligned for sealing.

  3. Fit the outer plate

    Insert the outer plate and gasket into the cable entry from the outside of the enclosure. Ensure the gasket aligns correctly to provide a proper seal before proceeding.

  4. Secure the retainer plate

    Mount the retainer plate onto the stud and secure it with the hex nut using a 3/8 in. hex driver or wrench. Torque the nut to 18 in*lb (2 N*m) without over-tightening.

  5. Verify installation

    Ensure the product label on the retainer plate is visible from the inside of the enclosure and check that the installation maintains the IP66 rating.

Frequently Asked Questions about nVent

What industries and applications are nVent products used for?

nVent products are engineered for critical infrastructure and industrial applications across multiple demanding sectors. Key markets include Construction, Data Centers, Defense, Healthcare, Mining, Oil & Gas Refineries, Power Plants, Rail/Transit, Renewable Energy, Security, Ship Building, Steel Mills, Telecom, and Utilities. Their solutions are designed to withstand extreme environmental conditions, with temperature ranges from -55°C to 105°C and specialized features like UV resistance, oil resistance, and flame resistance.

What environmental ratings do nVent products have?

nVent enclosures feature comprehensive environmental ratings, including UL 508A, CSA, and NEMA Type 1, 2, 3, 4, 4X, 12, and 13 certifications. They are rated IEC 60529 IP66, providing robust protection against dust, water, and corrosion in both indoor and outdoor environments. These products operate effectively in temperatures ranging from -40°F to 266°F, with enhanced UV inhibitors for outdoor weathering and oil-resistant gaskets for superior sealing.

What accessories are available for nVent products?

nVent offers a comprehensive range of accessories across multiple product lines, including EMC accessories like bonding cable clamps and strain reliefs, inline accessories such as lock inserts and mounting brackets, CONCEPT accessories including panel conversion kits and rack-mount angles, and seismic accessories for specialized mounting requirements. Key accessory categories include grounding kits, DIN rail mounting solutions, panel supports, handles, and various mounting hardware compatible with different enclosure types.

What certifications and standards do nVent products comply with?

nVent products meet critical international certifications including UL (United States), CSA (Canada), CE (European Community), and EAC (Russia). Our products are designed to comply with rigorous industrial standards such as NEMA enclosure ratings, IEC 60529 IP ratings, and international safety standards across multiple industrial markets including oil & gas, power, manufacturing, and infrastructure.

What is nVent's warranty policy?

nVent offers a standard 18-month warranty from invoicing date for most automation products, covering defects in workmanship and materials. The warranty requires proper transportation, handling, storage, and installation within specified environmental conditions. Warranty coverage includes repair or replacement at nVent's discretion, with certain conditions such as authorized service repairs and operation within designed capacity limits.

What technical support does nVent offer?

nVent offers comprehensive technical support through multiple global contact centers across North America, South America, Europe, Middle East, India, and Asia. Customers can reach technical experts by phone at regional numbers, with the North American headquarters in Minneapolis, MN providing primary support at +1.763.421.2240. Additionally, nVent provides online support resources through their website, including CAD drawing downloads and an 'Ask The Expert' feature to assist with product technical inquiries.