Overview
The Motion Industries 450 BUNA O-Pack (Model MI S21908 071250 1-0102951) is a Buna-N O-ring assortment pack designed for sealing applications in hydraulic, pneumatic, and industrial automation systems. This product contains a selection of O-rings in the 450-series dash size configuration, manufactured to standard ISO dimensional tolerances and material specifications.
Key Features
- Buna-N (nitrile) material for superior chemical and oil resistance across standard industrial fluid types
- Standard dash size assortment for hydraulic cylinder, pump, and motor applications
- Pre-packaged assortment reduces time spent sourcing individual O-ring sizes
- Complies with standard industrial O-ring specifications for drop-in replacement in maintenance programs
- New in box condition with original packaging
Technical Specifications
- Material: Buna-N (Nitrile)
- Product Type: O-Ring Assortment Pack
- Configuration: 450-Series Dash Size
- Operating Temperature Range: -40°F to +250°F
- Part Number: MI S21908 071250 1-0102951
- Condition: New in Box
Typical Applications
- Hydraulic cylinder rod and port sealing
- Pump and motor shaft seals
- Pneumatic valve and actuator sealing
- Industrial equipment maintenance kits
- General industrial machinery sealing operations
Compatibility & Replacements
Compatible With
- Hydraulic systems using ISO VG 32 through ISO VG 68 fluids
- Pneumatic systems operating at standard industrial pressures (up to 250 psi)
- Industrial equipment using ISO 3384 O-ring specifications
- Maintenance programs requiring standard SAE and ISO dash-size O-rings
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator or equipment manufacturer before ordering. Standard 450-series Buna-N O-rings are commonly interchangeable across industrial applications where ISO dash-size specifications match.
Works With
- Hydraulic fluid ISO VG 32, 46, and 68
- Standard compressed air systems
- Industrial maintenance and repair kits
- Equipment OEM service parts programs




