Overview
The Minsup 4 inch air seal rubber washer is a replacement gasket designed for Minsup Type A air couplings used in pneumatic systems. These couplings are universally designed to connect hoses of differing sizes with ease, making them ideal for conveying air and water. This washer maintains proper sealing at coupling interfaces to ensure reliable, leak-free operation in compressed air applications.
Key Features
- Natural rubber material rated -29°C to 71°C operating temperature range
- OEM replacement part for Minsup Type A air couplings
- Suitable for compressed air and pressured water transfer applications
- Complies with AS 2554 and AS 2660 standards for hose and hose assemblies for air and water
- Direct replacement washer — no additional modifications required
- Cost-effective seal maintenance for existing coupling infrastructure
Technical Specifications
This replacement washer is sized for 4 inch Minsup couplings and uses standard natural rubber sealing material. Temperature operating range is -29°C to 71°C. For complete pressure rating and dimensional specifications specific to SKU B-4-2-42, verify with Minsup technical documentation or your system integrator before ordering.
Typical Applications
- Compressed air and water applications in mining, mineral processing, air tool industries, and equipment rental operations
- Industrial hose coupling maintenance and repair
- Pneumatic system preventative maintenance
- Emergency replacement in production environments where downtime is critical
Compatibility & Replacements
Compatible With
- Minsup Type A air couplings (4 inch)
- Minsup pneumatic coupling systems
- Standard compressed air hose assemblies compatible with Type A connections
Replaces / Drop-In Replacement For
- Original Minsup 4 inch air seal washers
- Worn or damaged Type A coupling seals
- SKU: B-4-2-42
Works With
- Minsup pneumatic coupling platforms
- Standard ISO 1089 compressed air systems
- Water transfer hose assemblies rated for Type A connections





