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The MIDLAND INDUSTRIES 73345B is a black polyurethane tubing sold in a 100-foot roll, designed for pneumatic, fluid transfer, and general industrial applications where flexibility and durability are required. The tubing measures 3/8 inch outer diameter with a 1/4 inch inner diameter and a 0.063-inch wall thickness. It carries a Shore A 98 hardness rating, indicating a firm yet flexible construction suited for moderate-pressure service lines. A 1-inch minimum bend radius allows routing through tight spaces without kinking. Operating temperatures range from -40 to 150 degrees F, making it suitable for both cold-storage environments and heated industrial spaces. Licensed HVAC technicians, plumbers, and industrial service professionals typically stock this tubing for pneumatic control lines and low-pressure fluid transfer.
This tubing is well suited for pneumatic tool lines, air compressor distribution, low-pressure fluid conveying, and industrial automation applications. Its resistance to abrasion, chemicals, cold, heat, and kinking makes it a practical choice for environments where standard PVC or nylon tubing would degrade quickly. The 100-foot roll length reduces field splicing and is practical for both new installations and retrofit projects in light commercial and industrial settings. Trade professionals in HVAC controls, pneumatic instrumentation, and general mechanical service will find this a reliable utility tubing for everyday routing tasks.
Designed as a general-purpose polyurethane replacement tubing compatible with standard 3/8-inch OD push-to-connect fittings and barbed fittings used in pneumatic and low-pressure fluid systems.
Installation is typically performed by HVAC controls technicians, industrial mechanics, or plumbers working on pneumatic or fluid transfer lines. Depressurize and isolate any existing line before cutting or splicing tubing. Use a clean, straight tube cutter or sharp blade to ensure a square cut for proper fitting engagement. Confirm fitting compatibility with the 3/8-inch OD and 1/4-inch ID dimensions before installation.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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