JIS B 2401 Series P — dynamic (2/2) — dimension table
The Series P — dynamic series of the JIS B 2401 standard: 22 O-ring sizes. Each row lists the inner diameter (ID), cross-section (CS), outer diameter (OD) and a link to the matching O-ring in the catalogue.
ID = Inner diameter (ID, mm) · CS = Cross-section (CS, mm) · OD = Outer diameter (OD, mm)
| Designation | Inner diameter (ID, mm) | Cross-section (CS, mm) | Outer diameter (OD, mm) | Catalogue product |
|---|---|---|---|---|
| P240 | 239.5 | 8.4 | 256.3 | Search catalogue |
| P245 | 244.5 | 8.4 | 261.3 | Search catalogue |
| P250 | 249.5 | 8.4 | 266.3 | Search catalogue |
| P255 | 254.5 | 8.4 | 271.3 | Nearest product255 × 7 mmLast few |
| P260 | 259.5 | 8.4 | 276.3 | Nearest product260 × 8 mm |
| P265 | 264.5 | 8.4 | 281.3 | Search catalogue |
| P270 | 269.5 | 8.4 | 286.3 | Nearest product270 × 7 mmLast few |
| P275 | 274.5 | 8.4 | 291.3 | Search catalogue |
| P280 | 279.5 | 8.4 | 296.3 | Nearest product280 × 8 mmLast few |
| P285 | 284.5 | 8.4 | 301.3 | Search catalogue |
| P290 | 289.5 | 8.4 | 306.3 | Search catalogue |
| P295 | 294.5 | 8.4 | 311.3 | Search catalogue |
| P300 | 299.5 | 8.4 | 316.3 | Nearest product298 × 7 mm |
| P315 | 314.5 | 8.4 | 331.3 | Search catalogue |
| P320 | 319.5 | 8.4 | 336.3 | Search catalogue |
| P335 | 334.5 | 8.4 | 351.3 | Search catalogue |
| P340 | 339.5 | 8.4 | 356.3 | Search catalogue |
| P355 | 354.5 | 8.4 | 371.3 | Search catalogue |
| P360 | 359.5 | 8.4 | 376.3 | Search catalogue |
| P375 | 374.5 | 8.4 | 391.3 | Search catalogue |
| P385 | 384.5 | 8.4 | 401.3 | Search catalogue |
| P400 | 399.5 | 8.4 | 416.3 | Search catalogue |
Dimensions match the published tables of the JIS B 2401 standard. Outer diameter is computed as ID + 2 × cross-section.