The nVent HOFFMAN AS150SS is a durable stainless steel hole seal designed to close unused conduit openings, knockout holes and enclosure cut-outs in electrical cabinets and industrial enclosures. As part of the nVent HOFFMAN Hol-Sealers range, it provides a reliable sealing solution to help maintain enclosure protection and prevent the entry of dust, dirt, oil and water.
Manufactured from corrosion-resistant stainless steel, the AS150SS is designed for demanding industrial environments where long-term durability and resistance to harsh conditions are required. The gasketed design supports reliable sealing performance when installed correctly on compatible enclosure systems.
Designed for M50 openings, the nVent HOFFMAN AS150SS provides a practical solution for sealing larger unused enclosure holes. Its robust construction makes it suitable for electrical control panels, automation systems and industrial equipment housings.
Key Advantages
Reliable stainless steel hole sealing solution for industrial enclosures.
Helps maintain enclosure protection by sealing unused openings.
Stainless steel construction provides excellent corrosion resistance.
Suitable for larger conduit and knockout openings.
Designed for use with nVent HOFFMAN enclosure systems.
Ideal for demanding industrial and automation environments.
Key Features
nVent HOFFMAN Hol-Sealers series accessory.
Stainless steel construction.
M50 hole seal size.
Corrosion-resistant finish for industrial applications.
Gasketed design for improved enclosure sealing.
Suitable for unused enclosure openings and cut-outs.
Designed for electrical cabinet and automation applications.
Reliable Sealing for Industrial Enclosures
Hole seals such as the nVent HOFFMAN AS150SS provide a simple and effective method of closing unused openings while preserving enclosure integrity. They are commonly used in electrical cabinets, control panels and automation enclosures where environmental protection is required.
The Hol-Sealers range supports professional enclosure installations by providing dependable accessories that help maintain protection against external contaminants. The stainless steel construction of the AS150SS makes it suitable for applications where strength and corrosion resistance are important.
The AS150SS is a stainless steel hole seal used to close unused openings in electrical enclosures and control cabinets.
What material is the AS150SS made from?
The AS150SS is manufactured from stainless steel for improved durability and corrosion resistance.
What size opening does the AS150SS seal?
The AS150SS is designed for M50 enclosure openings.
Where is the AS150SS typically installed?
The AS150SS is typically installed in industrial electrical enclosures, automation panels and control cabinets.
Why use a stainless steel hole seal?
A stainless steel hole seal provides a durable method of closing unused openings while supporting enclosure protection in demanding environments.
Trusted by Industrial Engineers Worldwide
nVent HOFFMAN enclosure accessories are trusted by panel builders and industrial engineers to maintain reliable protection, safety and performance in electrical enclosure installations.
Country of Manufacture
United States
Manufacturer
nVent HOFFMAN
Series
Hol-Sealers
Model
AS150SS
Product type
Hole seal
Material
Stainless steel
Hole size
M50
Application
Sealing unused enclosure openings
No documents available for this product.
Delivery
We offer fast UK delivery on all stocked items. Orders placed before 3pm Monday to Friday are eligible for next-day delivery.
Standard delivery: 2–3 working days
Next-day delivery: available on in-stock items when ordered before 3pm
Express options available — contact us for details
Returns
If you need to return an item, please contact our sales team within 30 days of receipt. Items must be returned unused in their original packaging.
Our service agreements are built to support long term procurement relationships. By working closely with engineering teams and procurement departments, we help streamline purchasing processes while ensuring consistent access to critical components and sourcing support when it matters most.
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At Led Controls Ltd we help engineers source the right automation and control gear with confidence. below are quick answers to what we are asked most often.
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We supply all leading manfacturers in our industry. we offer next day delivery on most poplour products.
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LED Controls is a specialist distributor of factory automation and industrial controls, supplying OEMs, machine builders, panel builders and end users throughout the UK and worldwide. As a trusted UK distributor for many of the world’s leading automation manufacturers, we provide industrial control products, technical expertise and bespoke automation solutions backed by outstanding customer service.
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...
2025 has been a big year for LED Controls, and our blog has expanded accordingly. We've covered a wide range of topics across industrial control and factory automation this year. From core technology explainers and new product releases to panel building best practice...