First Company 451031R Red Nylon Air Brake Tubing 1/4 in 150 Psi

Product Description

The FIRST COMPANY 451031R is a red nylon reinforced bulk air brake tubing designed for compressed air systems in commercial vehicle and industrial pneumatic applications. Constructed from nylon with reinforced wall construction, this tubing measures 0.25 inches inner diameter and 0.37 inches outer diameter with a wall thickness of 0.062 inches. It is rated to 150 psi working pressure and handles temperatures from -40 degrees F to 200 degrees F, making it suitable for demanding service conditions. Sold in a 1-foot length, it is typically cut to length and fitted by fleet maintenance technicians and pneumatic system installers.

This tubing is used in air brake systems on commercial trucks, trailers, and heavy equipment where a reliable, flexible pneumatic line is required. The red color coding aids in quick identification of brake circuit lines during installation and inspection. Its resistance to ozone and UV exposure makes it appropriate for both under-hood and exposed routing in outdoor environments. A 1.5-inch minimum bend radius allows routing through tight spaces without kinking or flow restriction.

Key Features

• 150 psi working pressure rating for air brake circuit service
• Nylon construction with reinforced wall for durability under pressure cycling
• Rated for -40 degrees F to 200 degrees F operating temperature range
• Ozone and UV resistant for exposed or under-hood routing
• 1.5-inch minimum bend radius reduces kink risk in tight routing paths
• Red color coding for easy brake circuit identification

Compatibility

Designed as a standard-style replacement or bulk supply tubing for air brake and pneumatic systems requiring 0.25-inch ID nylon tubing rated to 150 psi.

Installation Notes

Installation of air brake tubing should be performed by qualified fleet or pneumatic systems technicians following applicable FMVSS and vehicle manufacturer guidelines. Depressurize the air system fully before cutting, removing, or fitting any tubing. Use appropriate tube cutting tools to ensure clean, square cuts, and verify fitting compatibility before pressurizing the system. Do not exceed the rated working pressure or minimum bend radius during installation.

Technical Specifications

• Inner Diameter: 0.25 inches
• Outer Diameter: 0.37 inches
• Wall Thickness: 0.062 inches
• Length: 1 foot
• Working Pressure: 150 psi
• Temperature Range: -40 degrees F to 200 degrees F
• Minimum Bend Radius: 1.5 inches
• Material: Nylon
• Color: Red
• Resistance Properties: Ozone, UV

Standard Information

• Brand: FIRST COMPANY
• Manufacturer Part Number: 451031R