Hazardous location hole seals are designed to be used on Increased Safety (Ex e) enclosures in ATEX or IECEx Zone 1 or 2 hazardous areas. Certified to be used on metallic, non-painted enclosures, these hole seals are made with a robust Type 316 stainless steel formed outer plate and a silicone rubber gasket to ensure a dust-, oil- and water-tight seal.

Hoffman Hole Seal, Hazardous Location, Series: HLY, 0.787 to 0.885 in Dia, 1/2 in Conduit, For Use With: Increased Safety Enclosure in Zone 1 or 2 Assemblies, 316 Stainless Steel, Brushed, 1.378 x 1.378 x 0.6811 in

• Seal pushbutton holes, conduit openings and knockout openings against dust, dirt, oil and water
• Easy installation in enclosure cut-outs with Self-centering hole seals
• Robust formed outer plates are made from Type 316 stainless steel with a brushed finish
• 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)
• Hole seals are available in metric and english standard hole sizes

• Instruction/Installation Manual https://externalassets.unilogcorp.com/ASSETS/DOCUMENTS/ITEMS/EN/nVent_HOFFMAN_EXAS100SS6_Installation_Manual.pdf