Overview
The Norgren 5298-03 is a non-relieving regulator service kit designed for the R43 series regulator. This OEM replacement kit provides all internal components needed to rebuild and restore R43 regulators to full operational specifications. Compatible with both 1/4″ and 3/8″ port sizes, the 5298-03 kit is widely used across industrial pneumatic systems for quick on-site repairs and preventive maintenance.
Key Features
- OEM replacement parts from Norgren—premium quality and verified compatibility
- Non-relieving design suitable for R43 series regulators
- Fits both 1/4″ and 3/8″ valve sizes
- Complete rebuild kit—no need to source individual components
- Drop-in replacement components reduce downtime
Technical Specifications
- Regulator Series: R43 (Non-Relieving)
- Port Sizes: 1/4″, 3/8″
- Kit Contents: Diaphragm, seat, spring, O-ring seal
- Manufacturer: Norgren
- Part Number: 5298-03
- Condition: New, no box
Typical Applications
This service kit is ideal for maintenance and repair of pneumatic systems including:
- Manufacturing automation and assembly lines
- Industrial air compression systems
- Pneumatic control circuits
- Equipment rebuilds and overhauls
- Field replacement and preventive maintenance
Compatibility & Replacements
Compatible With
- Norgren R43 regulator series (all versions)
- Standard industrial pneumatic systems operating 1/4″ and 3/8″ lines
- Systems using non-relieving regulator designs
Replaces / Drop-In Replacement For
- Original Norgren 5298-03 kit components
- Worn or damaged R43 regulator internal parts
Works With
- Pneumatic control valves and manifolds
- Industrial compressed air networks
- Norgren regulator maintenance and rebuild procedures







