Eaton LSA300 FS 04 Link-Seal environmental seal - 3h Rating
Part Number: LSA300 FS 04
Quick Summary
Eaton LSA300 FS 04 Link-Seal environmental seal seals conduits through cast or cored holes in electrical enclosures. Manufacturers and maintenance teams often struggle with moisture, dust, and ingress at penetrations, leading to downtime and costly repairs—this seal streamlines field installation. Its silicone construction supports Ordinary/Non-Hazardous Locations and offers a robust 3-hour rating for short-term exposure in dynamic industrial environments. By aligning with EMT, IMC, and RSC conduit systems, it simplifies procurement and inventory while delivering reliable performance for industrial wiring projects. In short, this solution enhances reliability, reduces maintenance, and supports faster, safer installations across manufacturing and utility environments.
Product Information
Extended Description
LSA300 FS 04 Eaton: Eaton Crouse-Hinds series Link-Seal environmental seal, Silicone, 3 hour rating, 1" or 1-1/4", Used with cast/cored hole
Product Name
Eaton Crouse-Hinds series Link-Seal environmental seal
Catalog Number
LSA300 FS 04
UPC
782274999449
Product Length/Depth
5.75 in
Product Height
8 in
Product Width
5.75 in
Product Weight
1 lb
Area classification
Ordinary/Non-Hazardous Locations
Conduit type
EMT, IMC, RSC
Material
Silicone
Trade size
1", 1-1/4"
Special features
3 hour rating
Used with
Cast/cored hole
Crouse-Hinds series Link-Seal Environmental Seal for Conduit catalog page
IF 1374 - Link-Seal Conduit Seals
Eaton Specification Sheet - LSA300 FS 04
Feature: Silicone material delivers a stable, long-lasting seal that resists moisture, dust, and temperature swings. Business Impact: This durability lowers ingress-related failures and reduces maintenance costs over the life of the enclosure. Application: Use in cast/cored hole penetrations to protect electrical gear in industrial environments, with EMT, IMC, and RSC conduit types. Feature: Available in 1 inch and 1-1/4 inch trade sizes. Business Impact: Fits common conduit sizes, minimizing the need for adapters and spare parts. Application: Streamlines field retrofits and new builds in control panels. Feature: 3-hour rating. Business Impact: Adds short-term protection against moisture ingress during cleaning, water exposure, or rain events. Application: Suitable for ordinary locations where moisture exposure is intermittent. Feature: Broad conduit compatibility with EMT, IMC, and RSC. Business Impact: Reduces total cost of ownership by simplifying stocking and maintenance. Application: Ideal for OEMs and facilities with mixed conduit types. Feature: Cast/cored hole compatibility. Business Impact: Enables watertight penetrations without resealing after drilling. Application: Retrofit and new-panel installations. Feature: Silicone sealant reliability from a trusted brand. Business Impact: Leverages Eaton/Crouse-Hinds reputation for reliability and support. Application: Suitable for maintenance contracts and procurement programs.
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FAQs
The LSA300 FS 04 supports 1 inch and 1-1/4 inch trade sizes and is compatible with EMT, IMC, and RSC conduits. It is designed for use with cast or cored holes, enabling a reliable seal across common industrial installations and reducing the need for adapters or custom solutions.
The 3 hour rating provides temporary resilience against moisture exposure during fast-paced maintenance, cleaning, or brief water encounters. For ordinary/non-hazardous locations, this rating helps maintain enclosure integrity without requiring additional sealing steps, improving uptime and reducing rework.
Yes. The LSA300 FS 04 is designed for cast/cored holes and works with EMT, IMC, and RSC conduits, making it suitable for retrofits. Its silicone composition maintains a tight seal over time, simplifying field installations and minimizing downtime during panel upgrades.
Installers should ensure the hole is properly prepared for the seal, use the correct trade size (1" or 1-1/4"), and verify the conduit type compatibility (EMT, IMC, RSC). The seal is rated for Ordinary/Non-Hazardous Locations, aligning with standard industrial wiring practices to maintain compliance and reliability.
Routine inspections of conduit penetrations for signs of wear or seal degradation are advised. If moisture ingress or cracking is observed, replace the seal with a new LSA300 FS 04 unit to restore watertight integrity and minimize downtime. Keeping spare seals in inventory supports rapid maintenance and project continuity.