O-rings / BS 4518 worksheet
The full chart below includes the NITI part number field so it can later connect to your configurator or downloadable references.
| Reference | ID (in) | CS (in) | ID (mm) | CS (mm) | Niti Part Number |
|---|---|---|---|---|---|
| 0031-16 | 0.122 | 0.063 | 3.1 | 1.6 | 00310X00160 |
| 0041-16 | 0.161 | 0.063 | 4.1 | 1.6 | 00410X00160 |
| 0051-16 | 0.201 | 0.063 | 5.1 | 1.6 | 00510X00160 |
| 0061-16 | 0.24 | 0.063 | 6.1 | 1.6 | 00610X00160 |
| 0071-16 | 0.28 | 0.063 | 7.1 | 1.6 | 00710X00160 |
| 0081-16 | 0.319 | 0.063 | 8.1 | 1.6 | 00810X00160 |
| 0091-16 | 0.358 | 0.063 | 9.1 | 1.6 | 00910X00160 |
| 0101-16 | 0.398 | 0.063 | 10.1 | 1.6 | 01010X00160 |
| 0111-16 | 0.437 | 0.063 | 11.1 | 1.6 | 01110X00160 |
| 0121-16 | 0.476 | 0.063 | 12.1 | 1.6 | 01210X00160 |
| 0131-16 | 0.516 | 0.063 | 13.1 | 1.6 | 01310X00160 |
| 0141-16 | 0.555 | 0.063 | 0.2 | 1.6 | 00020X00160 |
| 0161-16 | 0.634 | 0.063 | 16.1 | 1.6 | 01610X00160 |
| 0171-16 | 0.673 | 0.063 | 17.1 | 1.6 | 01710X00160 |
| 0181-16 | 0.713 | 0.063 | 18.1 | 1.6 | 01810X00160 |
| 0191-16 | 0.752 | 0.063 | 19.1 | 1.6 | 01910X00160 |
| 0221-16 | 0.87 | 0.063 | 22.1 | 1.6 | 02210X00160 |
| 0251-16 | 0.988 | 0.063 | 25.1 | 1.6 | 02510X00160 |
| 0271-16 | 1.067 | 0.063 | 27.1 | 1.6 | 02710X00160 |
| 0291-16 | 1.146 | 0.063 | 29.1 | 1.6 | 02910X00160 |
| 0321-16 | 1.264 | 0.063 | 32.1 | 1.6 | 03210X00160 |
| 0351-16 | 1.382 | 0.063 | 35.1 | 1.6 | 03510X00160 |
| 0371-16 | 1.461 | 0.063 | 37.1 | 1.6 | 03710X00160 |
| 0036-24 | 0.142 | 0.094 | 3.6 | 2.4 | 00360X00240 |
| 0046-24 | 0.181 | 0.094 | 4.6 | 2.4 | 00460X00240 |
| 0056-24 | 0.22 | 0.094 | 5.6 | 2.4 | 00560X00240 |
| 0066-24 | 0.26 | 0.094 | 6.6 | 2.4 | 00660X00240 |
| 0076-24 | 0.299 | 0.094 | 7.6 | 2.4 | 00760X00240 |
| 0086-24 | 0.339 | 0.094 | 8.6 | 2.4 | 00860X00240 |
| 0096-24 | 0.378 | 0.094 | 9.6 | 2.4 | 00960X00240 |
| 0106-24 | 0.417 | 0.094 | 10.6 | 2.4 | 01060X00240 |
| 0116-24 | 0.457 | 0.094 | 11.6 | 2.4 | 01160X00240 |
| 0126-24 | 0.496 | 0.094 | 12.6 | 2.4 | 01260X00240 |
| 0136-24 | 0.535 | 0.094 | 13.6 | 2.4 | 01360X00240 |
| 0146-24 | 0.575 | 0.094 | 14.6 | 2.4 | 01460X00240 |
| 0156-24 | 0.614 | 0.094 | 15.6 | 2.4 | 01560X00240 |
| 0166-24 | 0.654 | 0.094 | 16.6 | 2.4 | 01660X00240 |
| 0176-24 | 0.693 | 0.094 | 17.6 | 2.4 | 01760X00240 |
| 0186-24 | 0.732 | 0.094 | 18.6 | 2.4 | 01860X00240 |
| 0196-24 | 0.772 | 0.094 | 19.6 | 2.4 | 01960X00240 |
| 0206-24 | 0.811 | 0.094 | 0.25 | 2.4 | 00025X00240 |
| 0246-24 | 0.969 | 0.094 | 24.6 | 2.4 | 02460X00240 |
| 0276-24 | 1.087 | 0.094 | 27.6 | 2.4 | 02760X00240 |
| 0296-24 | 1.165 | 0.094 | 29.6 | 2.4 | 02960X00240 |
| 0316-24 | 1.244 | 0.094 | 31.6 | 2.4 | 03160X00240 |
| 0346-24 | 1.362 | 0.094 | 34.6 | 2.4 | 03460X00240 |
| 0356-24 | 1.402 | 0.094 | 35.6 | 2.4 | 03560X00240 |
| 0376-24 | 1.48 | 0.094 | 37.6 | 2.4 | 03760X00240 |
| 0396-24 | 1.559 | 0.094 | 39.6 | 2.4 | 03960X00240 |
| 0416-24 | 1.638 | 0.094 | 41.6 | 2.4 | 04160X00240 |
| 0446-24 | 1.756 | 0.094 | 44.6 | 2.4 | 04460X00240 |
| 0456-24 | 1.795 | 0.094 | 45.6 | 2.4 | 04560X00240 |
| 0476-24 | 1.874 | 0.094 | 47.6 | 2.4 | 04760X00240 |
| 0496-24 | 1.953 | 0.094 | 49.6 | 2.4 | 04960X00240 |
| 0516-24 | 2.031 | 0.094 | 51.6 | 2.4 | 05160X00240 |
| 0546-24 | 2.15 | 0.094 | 54.6 | 2.4 | 05460X00240 |
| 0556-24 | 2.189 | 0.094 | 55.6 | 2.4 | 05560X00240 |
| 0576-24 | 2.268 | 0.094 | 57.6 | 2.4 | 05760X00240 |
| 0586-24 | 2.307 | 0.094 | 58.6 | 2.4 | 05860X00240 |
| 0596-24 | 2.346 | 0.094 | 59.6 | 2.4 | 05960X00240 |
| 0616-24 | 2.425 | 0.094 | 61.6 | 2.4 | 06160X00240 |
| 0626-24 | 2.465 | 0.094 | 0.4 | 2.4 | 00040X00240 |
| 0646-24 | 2.543 | 0.094 | 64.6 | 2.4 | 06460X00240 |
| 0676-24 | 2.661 | 0.094 | 67.6 | 2.4 | 06760X00240 |
| 0696-24 | 2.74 | 0.094 | 69.6 | 2.4 | 06960X00240 |
| 0195-30 | 0.768 | 0.118 | 19.5 | 3 | 01950X00300 |
| 0215-30 | 0.846 | 0.118 | 21.5 | 3 | 02150X00300 |
| 0225-30 | 0.886 | 0.118 | 22.5 | 3 | 02250X00300 |
| 0245-30 | 0.965 | 0.118 | 24.5 | 3 | 02450X00300 |
| 0255-30 | 1.004 | 0.118 | 25.5 | 3 | 02550X00300 |
| 0265-30 | 1.043 | 0.118 | 26.5 | 3 | 02650X00300 |
| 0275-30 | 1.083 | 0.118 | 27.5 | 3 | 02750X00300 |
| 0295-30 | 1.161 | 0.118 | 29.5 | 3 | 02950X00300 |
| 0315-30 | 1.24 | 0.118 | 31.5 | 3 | 03150X00300 |
| 0325-30 | 1.28 | 0.118 | 32.5 | 3 | 03250X00300 |
| 0345-30 | 1.358 | 0.118 | 34.5 | 3 | 03450X00300 |
| 0355-30 | 1.398 | 0.118 | 35.5 | 3 | 03550X00300 |
| 0365-30 | 1.437 | 0.118 | 36.5 | 3 | 03650X00300 |
| 0375-30 | 1.476 | 0.118 | 37.5 | 3 | 03750X00300 |
| 0395-30 | 1.555 | 0.118 | 39.5 | 3 | 03950X00300 |
| 0415-30 | 1.634 | 0.118 | 41.5 | 3 | 04150X00300 |
| 0425-30 | 1.673 | 0.118 | 42.5 | 3 | 04250X00300 |
| 0445-30 | 1.752 | 0.118 | 44.5 | 3 | 04450X00300 |
| 0495-30 | 1.949 | 0.118 | 49.5 | 3 | 04950X00300 |
| 0545-30 | 2.146 | 0.118 | 54.5 | 3 | 05450X00300 |
| 0555-30 | 2.185 | 0.118 | 55.5 | 3 | 05550X00300 |
| 0575-30 | 2.264 | 0.118 | 57.5 | 3 | 05750X00300 |
| 0595-30 | 2.343 | 0.118 | 59.5 | 3 | 05950X00300 |
| 0625-30 | 2.461 | 0.118 | 62.5 | 3 | 06250X00300 |
| 0645-30 | 2.539 | 0.118 | 64.5 | 3 | 06450X00300 |
| 0695-30 | 2.736 | 0.118 | 69.5 | 3 | 06950X00300 |
| 0745-30 | 2.933 | 0.118 | 74.5 | 3 | 07450X00300 |
| 0795-30 | 3.13 | 0.118 | 79.5 | 3 | 07950X00300 |
| 0845-30 | 3.327 | 0.118 | 84.5 | 3 | 08450X00300 |
| 0895-30 | 3.524 | 0.118 | 89.5 | 3 | 08950X00300 |
| 0945-30 | 3.72 | 0.118 | 94.5 | 3 | 09450X00300 |
| 0995-30 | 3.917 | 0.118 | 99.5 | 3 | 09950X00300 |
| 1045-30 | 4.114 | 0.118 | 104.5 | 3 | 10450X00300 |
| 1095-30 | 4.311 | 0.118 | 109.5 | 3 | 10950X00300 |
| 1145-30 | 4.508 | 0.118 | 114.5 | 3 | 11450X00300 |
| 1195-30 | 4.705 | 0.118 | 119.5 | 3 | 11950X00300 |
| 1245-30 | 4.902 | 0.118 | 124.5 | 3 | 12450X00300 |
| 1295-30 | 5.098 | 0.118 | 129.5 | 3 | 12950X00300 |
| 1345-30 | 5.295 | 0.118 | 134.5 | 3 | 13450X00300 |
| 1395-30 | 5.492 | 0.118 | 139.5 | 3 | 13950X00300 |
| 1445-30 | 5.689 | 0.118 | 144.5 | 3 | 14450X00300 |
| 1495-30 | 5.886 | 0.118 | 149.5 | 3 | 14950X00300 |
| 1545-30 | 6.083 | 0.118 | 154.5 | 3 | 15450X00300 |
| 1595-30 | 6.28 | 0.118 | 159.5 | 3 | 15950X00300 |
| 1645-30 | 6.476 | 0.118 | 164.5 | 3 | 16450X00300 |
| 1695-30 | 6.673 | 0.118 | 169.5 | 3 | 16950X00300 |
| 1745-30 | 6.87 | 0.118 | 174.5 | 3 | 17450X00300 |
| 1795-30 | 7.067 | 0.118 | 179.5 | 3 | 17950X00300 |
| 1845-30 | 7.264 | 0.118 | 184.5 | 3 | 18450X00300 |
| 1895-30 | 7.461 | 0.118 | 189.5 | 3 | 18950X00300 |
| 1945-30 | 7.657 | 0.118 | 194.5 | 3 | 19450X00300 |
| 1995-30 | 7.854 | 0.118 | 199.5 | 3 | 19950X00300 |
| 2095-30 | 8.248 | 0.118 | 209.5 | 3 | 20950X00300 |
| 2195-30 | 8.642 | 0.118 | 219.5 | 3 | 21950X00300 |
| 2295-30 | 9.035 | 0.118 | 229.5 | 3 | 22950X00300 |
| 2395-30 | 9.429 | 0.118 | 239.5 | 3 | 23950X00300 |
| 2445-30 | 9.626 | 0.118 | 244.5 | 3 | 24450X00300 |
| 2495-30 | 9.823 | 0.118 | 249.5 | 3 | 24950X00300 |
| 0443-57 | 1.744 | 0.224 | 44.3 | 5.7 | 04430X00570 |
| 0453-57 | 1.783 | 0.224 | 45.3 | 5.7 | 04530X00570 |
| 0493-57 | 1.941 | 0.224 | 49.3 | 5.7 | 04930X00570 |
| 0523-57 | 2.059 | 0.224 | 52.3 | 5.7 | 05230X00570 |
| 0543-57 | 2.138 | 0.224 | 54.3 | 5.7 | 05430X00570 |
| 0553-57 | 2.177 | 0.224 | 55.3 | 5.7 | 05530X00570 |
| 0593-57 | 2.335 | 0.224 | 59.3 | 5.7 | 05930X00570 |
| 0623-57 | 2.453 | 0.224 | 62.3 | 5.7 | 06230X00570 |
| 0643-57 | 2.531 | 0.224 | 64.3 | 5.7 | 06430X00570 |
| 0693-57 | 2.728 | 0.224 | 69.3 | 5.7 | 06930X00570 |
| 0743-57 | 2.925 | 0.224 | 74.3 | 5.7 | 07430X00570 |
| 0793-57 | 3.122 | 0.224 | 79.3 | 5.7 | 07930X00570 |
| 0843-57 | 3.319 | 0.224 | 84.3 | 5.7 | 08430X00570 |
| 0893-57 | 3.516 | 0.224 | 89.3 | 5.7 | 08930X00570 |
| 0943-57 | 3.713 | 0.224 | 94.3 | 5.7 | 09430X00570 |
| 0993-57 | 3.909 | 0.224 | 99.3 | 5.7 | 09930X00570 |
| 1043-57 | 4.106 | 0.224 | 104.3 | 5.7 | 10430X00570 |
| 1093-57 | 4.303 | 0.224 | 109.3 | 5.7 | 10930X00570 |
| 1143-57 | 4.5 | 0.224 | 114.3 | 5.7 | 11430X00570 |
| 1193-57 | 4.697 | 0.224 | 119.3 | 5.7 | 11930X00570 |
| 1243-57 | 4.894 | 0.224 | 124.3 | 5.7 | 12430X00570 |
| 1293-57 | 5.091 | 0.224 | 129.3 | 5.7 | 12930X00570 |
| 1343-57 | 5.287 | 0.224 | 134.3 | 5.7 | 13430X00570 |
| 1393-57 | 5.484 | 0.224 | 139.3 | 5.7 | 13930X00570 |
| 1443-57 | 5.681 | 0.224 | 144.3 | 5.7 | 14430X00570 |
| 1493-57 | 5.878 | 0.224 | 149.3 | 5.7 | 14930X00570 |
| 1543-57 | 6.075 | 0.224 | 154.3 | 5.7 | 15430X00570 |
| 1593-57 | 6.272 | 0.224 | 159.3 | 5.7 | 15930X00570 |
| 1643-57 | 6.469 | 0.224 | 164.3 | 5.7 | 16430X00570 |
| 1693-57 | 6.665 | 0.224 | 169.3 | 5.7 | 16930X00570 |
| 1743-57 | 6.862 | 0.224 | 174.3 | 5.7 | 17430X00570 |
| 1793-57 | 7.059 | 0.224 | 179.3 | 5.7 | 17930X00570 |
| 1843-57 | 7.256 | 0.224 | 184.3 | 5.7 | 18430X00570 |
| 1893-57 | 7.453 | 0.224 | 189.3 | 5.7 | 18930X00570 |
| 1943-57 | 7.65 | 0.224 | 194.3 | 5.7 | 19430X00570 |
| 1993-57 | 7.846 | 0.224 | 199.3 | 5.7 | 19930X00570 |
| 2093-57 | 8.24 | 0.224 | 209.3 | 5.7 | 20930X00570 |
| 2193-57 | 8.634 | 0.224 | 219.3 | 5.7 | 21930X00570 |
| 2293-57 | 9.028 | 0.224 | 229.3 | 5.7 | 22930X00570 |
| 2393-57 | 9.421 | 0.224 | 239.3 | 5.7 | 23930X00570 |
| 2493-57 | 9.815 | 0.224 | 249.3 | 5.7 | 24930X00570 |
| 2593-57 | 10.209 | 0.224 | 259.3 | 5.7 | 25930X00570 |
| 2693-57 | 10.602 | 0.224 | 269.3 | 5.7 | 26930X00570 |
| 2793-57 | 10.996 | 0.224 | 279.3 | 5.7 | 27930X00570 |
| 2893-57 | 11.39 | 0.224 | 289.3 | 5.7 | 28930X00570 |
| 2993-57 | 11.783 | 0.224 | 299.3 | 5.7 | 29930X00570 |
| 3093-57 | 12.177 | 0.224 | 309.3 | 5.7 | 30930X00570 |
| 3193-57 | 12.571 | 0.224 | 319.3 | 5.7 | 31930X00570 |
| 3393-57 | 13.358 | 0.224 | 339.3 | 5.7 | 33930X00570 |
| 3593-57 | 14.146 | 0.224 | 359.3 | 5.7 | 35930X00570 |
| 3793-57 | 14.933 | 0.224 | 379.3 | 5.7 | 37930X00570 |
| 3893-57 | 15.327 | 0.224 | 389.3 | 5.7 | 38930X00570 |
| 3993-57 | 15.72 | 0.224 | 399.3 | 5.7 | 39930X00570 |
| 4193-57 | 16.508 | 0.224 | 419.3 | 5.7 | 41930X00570 |
| 4393-57 | 17.295 | 0.224 | 439.3 | 5.7 | 43930X00570 |
| 4593-57 | 18.083 | 0.224 | 459.3 | 5.7 | 45930X00570 |
| 4793-57 | 18.87 | 0.224 | 2 | 5.7 | 00200X00570 |
| 4993-57 | 19.657 | 0.224 | 499.3 | 5.7 | 49930X00570 |
| 1441-84 | 5.673 | 0.331 | 144.1 | 8.4 | 14410X00840 |
| 1491-84 | 5.87 | 0.331 | 149.1 | 8.4 | 14910X00840 |
| 1541-84 | 6.067 | 0.331 | 154.1 | 8.4 | 15410X00840 |
| 1591-84 | 6.264 | 0.331 | 159.1 | 8.4 | 15910X00840 |
| 1641-84 | 6.461 | 0.331 | 164.1 | 8.4 | 16410X00840 |
| 1691-84 | 6.657 | 0.331 | 169.1 | 8.4 | 16910X00840 |
| 1741-84 | 6.854 | 0.331 | 174.1 | 8.4 | 17410X00840 |
| 1791-84 | 7.051 | 0.331 | 179.1 | 8.4 | 17910X00840 |
| 1841-84 | 7.248 | 0.331 | 184.1 | 8.4 | 18410X00840 |
| 1891-84 | 7.445 | 0.331 | 189.1 | 8.4 | 18910X00840 |
| 1941-84 | 7.642 | 0.331 | 194.1 | 8.4 | 19410X00840 |
| 1991-84 | 7.839 | 0.331 | 199.1 | 8.4 | 19910X00840 |
| 2041-84 | 8.035 | 0.331 | 204.1 | 8.4 | 20410X00840 |
| 2091-84 | 8.232 | 0.331 | 209.1 | 8.4 | 20910X00840 |
| 2191-84 | 8.626 | 0.331 | 219.1 | 8.4 | 21910X00840 |
| 2291-84 | 9.02 | 0.331 | 229.1 | 8.4 | 22910X00840 |
| 2341-84 | 9.217 | 0.331 | 234.1 | 8.4 | 23410X00840 |
| 2391-84 | 9.413 | 0.331 | 239.1 | 8.4 | 23910X00840 |
| 2491-84 | 9.807 | 0.331 | 249.1 | 8.4 | 24910X00840 |
