Anderson Metals Corp 710559-06 Compression Stiffener Sleeve

Product Description

The ANDERSON METALS CORP 710559-06 is a compression stiffener sleeve designed to support and reinforce 3/8 inch OD plastic tubing at compression fittings. When plastic tubing is used with a standard compression fitting, the tubing wall can deform under compression force, leading to leaks or inconsistent seals. This insert sleeve slides inside the tubing end to maintain roundness and structural integrity during tightening. Sold in a 2-pack, this product is lead free compliant, making it suitable for potable water applications where lead-free material requirements apply. Plumbers and pipefitters typically install these during rough-in and fixture connection work.

This stiffener sleeve is used wherever 3/8 inch OD plastic tubing — such as polyethylene or PEX — connects to a compression fitting in residential or light commercial plumbing systems. Common applications include supply line connections to faucets, toilets, ice makers, and water filtration systems. The insert prevents the tubing from collapsing inward when the compression nut is tightened, ensuring a reliable, leak-free joint. The carded retail packaging makes these convenient for service techs to carry as standard stock items on a service truck.

Key Features

• Fits 3/8 inch OD plastic tubing for use with standard compression fittings
• Prevents tubing wall deformation during compression nut tightening
• Lead free compliant for potable water and drinking water system use
• Sold as a 2-pack for back-to-back connection work or as a spare
• Carded packaging for easy jobsite or truck-stock storage

Compatibility

Designed for use with 3/8 inch OD plastic tubing in compression fitting assemblies. Suitable for residential and light commercial plumbing supply line connections where plastic tubing is joined to compression-style fittings.

Installation Notes

Installation is performed by licensed plumbers or qualified pipefitters working on potable water supply lines. Shut off the water supply and relieve line pressure before disassembling any compression fitting. Insert the stiffener sleeve fully into the tubing end before positioning the compression nut and ring. Do not overtighten the compression nut, as excessive force can crack plastic tubing even with the sleeve in place.