Link-seal ls-475-s Modular Pipe Penetration Seal

Product Description

The LINK-SEAL ls-475-s is a modular pipe penetration seal designed to create a positive hydrostatic seal around pipes passing through walls, floors, and ceilings. The seal body is constructed from EPDM rubber and is rated for temperatures up to 175 degrees F. The S series ships with S316 stainless steel nuts and bolts, which have been salt spray tested to 1,470 hours, making it suitable for corrosive or wet environments. Pressure resistance is rated to 20 psig, equivalent to 40 feet of head. Licensed plumbers, pipefitters, and mechanical contractors are the primary installers for this type of fitting.

The ls-475-s is used in residential and commercial construction wherever a pipe penetrates a structural element such as a concrete wall, floor slab, or ceiling assembly. It accommodates pipes of varying diameters by linking individual rubber links around the pipe and drawing them tight with the included hardware. Typical applications include utility entries, mechanical room penetrations, and below-grade wall passages where moisture ingress or hydrostatic pressure must be controlled.

Key Features

• Pressure resistant to 20 psig (40 feet of head) for positive hydrostatic sealing
• EPDM rubber body rated to 175 degrees F for broad temperature compatibility
• S316 stainless steel hardware, salt spray tested to 1,470 hours for corrosion resistance
• Modular link design accommodates pipes of varying sizes without special tools
• ISO approved construction for quality assurance in commercial and industrial projects
• Compatible with walls, floors, and ceilings in a single seal design

Compatibility

Designed for use with pipes of any size passing through walls, floors, and ceilings in residential and commercial construction. The modular link format adapts to various pipe outside diameters. Specific pipe size compatibility should be confirmed against the LINK-SEAL sizing chart using the pipe outside diameter.

Installation Notes

Installation is performed by licensed plumbers or mechanical contractors following applicable plumbing and mechanical codes. Before installing, verify the annular space dimensions and pipe outside diameter against the seal size rating. No special tools are required beyond standard hand tools to tighten the stainless steel hardware. Do not overtighten the links, as excessive torque can deform the rubber elements and reduce sealing effectiveness.

Technical Specifications

• Seal Body Material: EPDM rubber (black)
• Hardware Material: S316 stainless steel
• Hardware Corrosion Rating: 1,470 hour salt spray tested
• Maximum Temperature: 175 degrees F
• Pressure Rating: 20 psig (40 feet of head)
• Series: S (stainless steel hardware)

Standard Information

• Brand: LINK-SEAL
• Manufacturer Part Number: ls-475-s