BS 4518 Metric O-Rings

/BS 4518 Metric O-Rings
BS 4518 Metric O-Rings 2019-06-21T10:45:41+00:00

BS 4518 Metric O-Rings Size Chart

Issued by the British Standards Institution, Standard BS 4518 identifies British Standard metric sizes. The size code for these O-Rings is a four digit number indicating the O-Ring I.D. in tenths of millimeters followed by a hyphen and two digits indicating the O-Ring Cross Section, also in tenths of a millimeter.

For a complete listing of all metric o-ring sizes, visit our Metric O-Ring Cross Reference Table.

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BS 4518 Size Chart

Global Part # Reference C/S (MM) I.D. (MM) C/S (Inch) I.D. (Inch)
1.60X003.1 0031-16 1.60 3.10 0.063 0.122
1.60X004.1 0041-16 1.60 4.10 0.063 0.161
1.60X005.1 0051-16 1.60 5.10 0.063 0.201
1.60X006.1 0061-16 1.60 6.10 0.063 0.240
1.60X007.1 0071-16 1.60 7.10 0.063 0.280
1.60X008.1 0081-16 1.60 8.10 0.063 0.319
1.60X009.1 0091-16 1.60 9.10 0.063 0.358
1.60X010.1 0101-16 1.60 10.10 0.063 0.398
1.60X011.1 0111-16 1.60 11.10 0.063 0.437
1.60X012.1 0121-16 1.60 12.10 0.063 0.476
1.60X013.1 0131-16 1.60 13.10 0.063 0.516
1.60X014.1 0141-16 1.60 14.10 0.063 0.555
1.60X015.1 0151-16 1.60 15.10 0.063 0.594
1.60X016.1 0161-16 1.60 16.10 0.063 0.634
1.60X017.1 0171-16 1.60 17.10 0.063 0.673
1.60X018.1 0181-16 1.60 18.10 0.063 0.713
1.60X019.1 0191-16 1.60 19.10 0.063 0.752
1.60X020.1 0201-16 1.60 20.10 0.063 0.791
1.60X021.1 0211-16 1.60 21.10 0.063 0.831
1.60X022.1 0221-16 1.60 22.10 0.063 0.870
1.60X025.1 0251-16 1.60 25.10 0.063 0.988
1.60X027.1 0271-16 1.60 27.10 0.063 1.067
1.60X029.1 0291-16 1.60 29.10 0.063 1.146
1.60X032.1 0321-16 1.60 32.10 0.063 1.264
1.60X035.1 0351-16 1.60 35.10 0.063 1.382
1.60X037.1 0371-16 1.60 37.10 0.063 1.461
2.40X003.6 0036-24 2.40 3.60 0.094 0.142
2.40X004.6 0046-24 2.40 4.60 0.094 0.181
2.40X005.6 0056-24 2.40 5.60 0.094 0.220
2.40X006.6 0066-24 2.40 6.60 0.094 0.260
2.40X007.6 0076-24 2.40 7.60 0.094 0.299
2.40X008.6 0086-24 2.40 8.60 0.094 0.339
2.40X009.6 0096-24 2.40 9.60 0.094 0.378
2.40X010.6 0106-24 2.40 10.60 0.094 0.417
2.40X011.6 0116-24 2.40 11.60 0.094 0.457
2.40X012.6 0126-24 2.40 12.60 0.094 0.496
2.40X013.6 0136-24 2.40 13.60 0.094 0.535
2.40X014.6 0146-24 2.40 14.60 0.094 0.575
2.40X015.6 0156-24 2.40 15.60 0.094 0.614
2.40X016.6 0166-24 2.40 16.60 0.094 0.654
2.40X017.6 0176-24 2.40 17.60 0.094 0.693
2.40X018.6 0186-24 2.40 18.60 0.094 0.732
2.40X019.6 0196-24 2.40 19.60 0.094 0.772
2.40X020.6 0206-24 2.40 20.60 0.094 0.811
2.40X021.6 0216-24 2.40 21.60 0.094 0.850
2.40X024.6 0246-24 2.40 24.60 0.094 0.969
2.40X027.6 0276-24 2.40 27.60 0.094 1.087
2.40X029.6 0296-24 2.40 29.60 0.094 1.165
2.40X031.6 0316-24 2.40 31.60 0.094 1.244
2.40X034.6 0346-24 2.40 34.60 0.094 1.362
2.40X035.6 0356-24 2.40 35.60 0.094 1.402
2.40X037.6 0376-24 2.40 37.60 0.094 1.480
2.40X039.6 0396-24 2.40 39.60 0.094 1.559
2.40X041.6 0416-24 2.40 41.60 0.094 1.638
2.40X044.6 0446-24 2.40 44.60 0.094 1.756
2.40X045.6 0456-24 2.40 45.60 0.094 1.795
2.40X047.6 0476-24 2.40 47.60 0.094 1.874
2.40X049.6 0496-24 2.40 49.60 0.094 1.953
2.40X051.6 0516-24 2.40 51.60 0.094 2.031
2.40X054.6 0546-24 2.40 54.60 0.094 2.150
2.40X055.6 0556-24 2.40 55.60 0.094 2.189
2.40X057.6 0576-24 2.40 57.60 0.094 2.268
2.40X058.6 0586-24 2.40 58.60 0.094 2.307
2.40X059.6 0596-24 2.40 59.60 0.094 2.346
2.40X061.6 0616-24 2.40 61.60 0.094 2.425
2.40X062.6 0626-24 2.40 62.60 0.094 2.465
2.40X064.6 0646-24 2.40 64.60 0.094 2.543
2.40X067.6 0676-24 2.40 67.60 0.094 2.661
2.40X069.6 0696-24 2.40 69.60 0.094 2.740
3.00X019.5 0195-30 3.00 19.50 0.118 0.768
3.00X021.5 0215-30 3.00 21.50 0.118 0.846
3.00X022.5 0225-30 3.00 22.50 0.118 0.886
3.00X024.5 0245-30 3.00 24.50 0.118 0.965
3.00X025.5 0255-30 3.00 25.50 0.118 1.004
3.00X026.5 0265-30 3.00 26.50 0.118 1.043
3.00X027.5 0275-30 3.00 27.50 0.118 1.083
3.00X029.5 0295-30 3.00 29.50 0.118 1.161
3.00X031.5 0315-30 3.00 31.50 0.118 1.240
3.00X032.5 0325-30 3.00 32.50 0.118 1.280
3.00X034.5 0345-30 3.00 34.50 0.118 1.358
3.00X035.5 0355-30 3.00 35.50 0.118 1.398
3.00X036.5 0365-30 3.00 36.50 0.118 1.437
3.00X037.5 0375-30 3.00 37.50 0.118 1.476
3.00X039.5 0395-30 3.00 39.50 0.118 1.555
3.00X041.5 0415-30 3.00 41.50 0.118 1.634
3.00X042.5 0425-30 3.00 42.50 0.118 1.673
3.00X044.5 0445-30 3.00 44.50 0.118 1.752
3.00X049.5 0495-30 3.00 49.50 0.118 1.949
3.00X054.5 0545-30 3.00 54.50 0.118 2.146
3.00X055.5 0555-30 3.00 55.50 0.118 2.185
3.00X057.5 0575-30 3.00 57.50 0.118 2.264
3.00X059.5 0595-30 3.00 59.50 0.118 2.343
3.00X062.5 0625-30 3.00 62.50 0.118 2.461
3.00X064.5 0645-30 3.00 64.50 0.118 2.539
3.00X069.5 0695-30 3.00 69.50 0.118 2.736
3.00X074.5 0745-30 3.00 74.50 0.118 2.933
3.00X079.5 0795-30 3.00 79.50 0.118 3.130
3.00X084.5 0845-30 3.00 84.50 0.118 3.327
3.00X089.5 0895-30 3.00 89.50 0.118 3.524
3.00X094.5 0945-30 3.00 94.50 0.118 3.720
3.00X099.5 0995-30 3.00 99.50 0.118 3.917
3.00X104.5 1045-30 3.00 104.50 0.118 4.114
3.00X109.5 1095-30 3.00 109.50 0.118 4.311
3.00X114.5 1145-30 3.00 114.50 0.118 4.508
3.00X119.5 1195-30 3.00 119.50 0.118 4.705
3.00X124.5 1245-30 3.00 124.50 0.118 4.902
3.00X129.5 1295-30 3.00 129.50 0.118 5.098
3.00X134.5 1345-30 3.00 134.50 0.118 5.295
3.00X139.5 1395-30 3.00 139.50 0.118 5.492
3.00X144.5 1445-30 3.00 144.50 0.118 5.689
3.00X149.5 1495-30 3.00 149.50 0.118 5.886
3.00X154.5 1545-30 3.00 154.50 0.118 6.083
3.00X159.5 1595-30 3.00 159.50 0.118 6.280
3.00X164.5 1645-30 3.00 164.50 0.118 6.476
3.00X169.5 1695-30 3.00 169.50 0.118 6.673
3.00X174.5 1745-30 3.00 174.50 0.118 6.870
3.00X179.5 1795-30 3.00 179.50 0.118 7.067
3.00X184.5 1845-30 3.00 184.50 0.118 7.264
3.00X189.5 1895-30 3.00 189.50 0.118 7.461
3.00X194.5 1945-30 3.00 194.50 0.118 7.657
3.00X199.5 1995-30 3.00 199.50 0.118 7.854
3.00X209.5 2095-30 3.00 209.50 0.118 8.248
3.00X219.5 2195-30 3.00 219.50 0.118 8.642
3.00X229.5 2295-30 3.00 229.50 0.118 9.035
3.00X239.5 2395-30 3.00 239.50 0.118 9.429
3.00X244.5 2445-30 3.00 244.50 0.118 9.626
3.00X249.5 2495-30 3.00 249.50 0.118 9.823
5.70X044.3 0443-57 5.70 44.30 0.224 1.744
5.70X045.3 0453-57 5.70 45.30 0.224 1.783
5.70X049.3 0493-57 5.70 49.30 0.224 1.941
5.70X052.3 0523-57 5.70 52.30 0.224 2.059
5.70X054.3 0543-57 5.70 54.30 0.224 2.138
5.70X055.3 0553-57 5.70 55.30 0.224 2.177
5.70X059.3 0593-57 5.70 59.30 0.224 2.335
5.70X062.3 0623-57 5.70 62.30 0.224 2.453
5.70X064.3 0643-57 5.70 64.30 0.224 2.531
5.70X069.3 0693-57 5.70 69.30 0.224 2.728
5.70X074.3 0743-57 5.70 74.30 0.224 2.925
5.70X079.3 0793-57 5.70 79.30 0.224 3.122
5.70X084.3 0843-57 5.70 84.30 0.224 3.319
5.70X089.3 0893-57 5.70 89.30 0.224 3.516
5.70X094.3 0943-57 5.70 94.30 0.224 3.713
5.70X099.3 0993-57 5.70 99.30 0.224 3.909
5.70X104.3 1043-57 5.70 104.30 0.224 4.106
5.70X109.3 1093-57 5.70 109.30 0.224 4.303
5.70X114.3 1143-57 5.70 114.30 0.224 4.500
5.70X119.3 1193-57 5.70 119.30 0.224 4.697
5.70X124.3 1243-57 5.70 124.30 0.224 4.894
5.70X129.3 1293-57 5.70 129.30 0.224 5.091
5.70X134.3 1343-57 5.70 134.30 0.224 5.287
5.70X139.3 1393-57 5.70 139.30 0.224 5.484
5.70X144.3 1443-57 5.70 144.30 0.224 5.681
5.70X149.3 1493-57 5.70 149.30 0.224 5.878
5.70X154.3 1543-57 5.70 154.30 0.224 6.075
5.70X159.3 1593-57 5.70 159.30 0.224 6.272
5.70X164.3 1643-57 5.70 164.30 0.224 6.469
5.70X169.3 1693-57 5.70 169.30 0.224 6.665
5.70X174.3 1743-57 5.70 174.30 0.224 6.862
5.70X179.3 1793-57 5.70 179.30 0.224 7.059
5.70X184.3 1843-57 5.70 184.30 0.224 7.256
5.70X189.3 1893-57 5.70 189.30 0.224 7.453
5.70X194.3 1943-57 5.70 194.30 0.224 7.650
5.70X199.3 1993-57 5.70 199.30 0.224 7.846
5.70X209.3 2093-57 5.70 209.30 0.224 8.240
5.70X219.3 2193-57 5.70 219.30 0.224 8.634
5.70X229.3 2293-57 5.70 229.30 0.224 9.028
5.70X239.3 2393-57 5.70 239.30 0.224 9.421
5.70X249.3 2493-57 5.70 249.30 0.224 9.815
5.70X259.3 2593-57 5.70 259.30 0.224 10.209
5.70X269.3 2693-57 5.70 269.30 0.224 10.602
5.70X279.3 2793-57 5.70 279.30 0.224 10.996
5.70X289.3 2893-57 5.70 289.30 0.224 11.390
5.70X299.3 2993-57 5.70 299.30 0.224 11.783
5.70X309.3 3093-57 5.70 309.30 0.224 12.177
5.70X319.3 3193-57 5.70 319.30 0.224 12.571
5.70X339.3 3393-57 5.70 339.30 0.224 13.358
5.70X359.3 3593-57 5.70 359.30 0.224 14.146
5.70X379.3 3793-57 5.70 379.30 0.224 14.933
5.70X389.3 3893-57 5.70 389.30 0.224 15.327
5.70X399.3 3993-57 5.70 399.30 0.224 15.720
5.70X419.3 4193-57 5.70 419.30 0.224 16.508
5.70X439.3 4393-57 5.70 439.30 0.224 17.295
5.70X459.3 4593-57 5.70 459.30 0.224 18.083
5.70X479.3 4793-57 5.70 479.30 0.224 18.870
5.70X489.3 4893-57 5.70 489.30 0.224 19.264
5.70X499.3 4993-57 5.70 499.30 0.224 19.657
8.40X144.1 1441-84 8.40 144.10 0.331 5.673
8.40X149.1 1491-84 8.40 149.10 0.331 5.870
8.40X154.1 1541-84 8.40 154.10 0.331 6.067
8.40X159.1 1591-84 8.40 159.10 0.331 6.264
8.40X164.1 1641-84 8.40 164.10 0.331 6.461
8.40X169.1 1691-84 8.40 169.10 0.331 6.657
8.40X174.1 1741-84 8.40 174.10 0.331 6.854
8.40X179.1 1791-84 8.40 179.10 0.331 7.051
8.40X184.1 1841-84 8.40 184.10 0.331 7.248
8.40X189.1 1891-84 8.40 189.10 0.331 7.445
8.40X194.1 1941-84 8.40 194.10 0.331 7.642
8.40X199.1 1991-84 8.40 199.10 0.331 7.839
8.40X204.1 2041-84 8.40 204.10 0.331 8.035
8.40X209.1 2091-84 8.40 209.10 0.331 8.232
8.40X219.1 2191-84 8.40 219.10 0.331 8.626
8.40X229.1 2291-84 8.40 229.10 0.331 9.020
8.40X234.1 2341-84 8.40 234.10 0.331 9.217
8.40X239.1 2391-84 8.40 239.10 0.331 9.413
8.40X249.1 2491-84 8.40 249.10 0.331 9.807