O-Ring Sizing Chart
If you need to replace a lost, damaged, or worn O-ring, use the information below to identify the correct size and purchase a replacement from your preferred supplier.
To determine the correct replacement O-ring:
- Locate your hose on the Danuser Parts Store or in your Operator's Manual.
- Identify the fitting type and size in the hose or adapter description (such as #10 ORB M, #8 ORFS M, or #8 BSPP M).
- Find the matching fitting type and size in the table below.
- Use the corresponding O-ring dimensions to purchase an O-ring from your preferred supplier.
Important: Do not select an O-ring based on hose or adapter diameter. Select it using the fitting type and size shown in the hose or adapter description. For example, a hose listed as (#10 ORB M to #10 ORB M) uses the O-ring shown for #10 ORB M in the chart.
| Fitting/ Hose End Type | Dash Size | Inside Diameter (ID) | Cross Section (CS) | Outside Diameter (OD) |
|---|---|---|---|---|
| #4 ORB M | 904 | 0.351" | 0.072" | 0.495" |
| #6 ORB M | 906 | 0.468" | 0.078" | 0.624" |
| #8 ORB M | 908 | 0.644" | 0.087" | 0.818" |
| #10 ORB M | 910 | 0.755" | 0.097" | 0.949" |
| #12 ORB M | 912 | 0.924" | 0.116" | 1.156" |
| #4 ORFS M | 011 | 0.301" | 0.07" | 0.441" |
| #6 ORFS M | 012 | 0.364" | 0.07" | 0.504" |
| #8 ORFS M | 014 | 0.489" | 0.07" | 0.629" |
| #10 ORFS M | 016 | 0.614" | 0.07" | 0.754" |
| #12 ORFS M | 018 | 0.739" | 0.07" | 0.879" |
| #8 BSPP M | OR-08 | 18.3mm | 2.4mm | 23.10mm |