Midland Industries 73341B Polyurethane Tubing 4mm Od 100 Ft

Product Description

The MIDLAND INDUSTRIES 73341B is a black polyurethane tubing supplied in a 100-foot roll, designed for pneumatic, instrumentation, and fluid-transfer applications where flexibility and durability are required. The tubing measures 4mm outer diameter with a 0.093-inch inner diameter and a 0.031-inch wall thickness. Shore A 98 hardness provides firm yet flexible performance. A 1/4-inch minimum bend radius allows routing through tight spaces without kinking. The -40 to 150 degrees F operating temperature range makes it suitable for both cold-environment and elevated-temperature service conditions. HVAC technicians, pneumatic system installers, and instrumentation mechanics are the primary trades working with this product.

This tubing is well suited for pneumatic control lines, sensor tubing, compressed-air distribution, and light fluid-transfer runs in residential, commercial, and industrial settings. Its abrasion and chemical resistance properties make it a practical choice for applications where the line may contact solvents, oils, or rough surfaces. The 100-foot roll length supports larger installations or multiple shorter runs from a single spool. The black colorway is standard for outdoor and UV-exposed routing where appearance and light-blocking properties matter.

Key Features

• 4mm OD and 0.093-inch ID with 0.031-inch wall thickness for consistent flow and pressure retention
• Shore A 98 hardness delivers rigidity with enough flexibility for tight routing
• 1/4-inch minimum bend radius resists kinking during installation and in service
• Operating range of -40 to 150 degrees F suits cold-storage and warm-equipment environments
• Resistant to abrasion, chemicals, cold, heat, and kinking
• 100-foot roll minimizes splices on longer runs

Compatibility

Designed as a general-purpose polyurethane tubing solution compatible with standard 4mm push-to-connect and barbed pneumatic and instrumentation fittings used in HVAC, automation, and fluid-transfer systems.

Installation Notes

Installation typically requires no special tools beyond a clean square cut using a tubing cutter or sharp blade to ensure a leak-free seat in push-to-connect fittings. Depressurize and de-energize any pneumatic or fluid system before disconnecting or replacing existing tubing runs. Avoid exceeding the published temperature or bend-radius limits, as doing so can cause premature failure or kinking. Consult applicable codes and the fitting manufacturer's specifications for maximum working pressure ratings before installation.