O Ring Part Numbers for most common regulators, gauges and cylinders
| Part Number | What For | |
| BS 003 | Pressure Gauge Spindle | |
| BS 011 | 3/8 Hoses (Low pressure) | |
| BS 012 | 7/16 Hoses (High Pressure) | |
| Metric TBA | Power Inflator internal O Ring | |
| BS 112 | Cylinder Valve (most common size) | |
| BS 010 | LP Hose Second stage input | |