Aro/ingersoll-rand 637428 Air Section Repair Kit Nitrile

Product Description

The ARO/INGERSOLL-RAND 637428 is a nitrile air section repair kit designed for use with 3/8 inch and 1/2 inch diaphragm pumps. The kit contains the gaskets, seals, and U-cups needed to restore proper air section function on worn or leaking pumps. Nitrile elastomers offer reliable resistance to oils and fuels, making this kit a practical choice for pump maintenance in fluid-handling applications. Maintenance technicians and pump service professionals use this kit to perform in-field or bench repairs without sourcing individual components separately.

This kit is suited for air-operated double-diaphragm pump maintenance in light industrial, HVAC, plumbing, and general fluid-transfer settings. It covers the air section of the pump, which controls the cycling of diaphragms through alternating air pressure. The 637428 is packaged as a single kit containing all required air section soft goods, reducing downtime during scheduled or corrective maintenance on compatible 3/8 inch and 1/2 inch ARO/INGERSOLL-RAND diaphragm pumps.

Key Features

• Nitrile material construction suitable for oil- and fuel-compatible service
• Includes gaskets, seals, and U-cups for a complete air section rebuild
• Fits 3/8 inch and 1/2 inch diaphragm pump configurations
• Single-kit packaging simplifies parts procurement and inventory
• OEM-sourced components maintain proper tolerances for air section cycling

Compatibility

Designed for use with 3/8 inch and 1/2 inch ARO/INGERSOLL-RAND diaphragm pumps requiring air section repair.

Installation Notes

Air section repair on diaphragm pumps should be performed by a qualified maintenance technician. Depressurize and isolate the pump from the air supply and fluid source before disassembly. Inspect the air valve bore and diaphragm chambers for wear or scoring before installing new soft goods. Follow the pump manufacturer's service manual for correct assembly sequence and torque guidance.