BS1806 O-ring Sizes
BS1806 O-ring Sizes
BS1806 O-ring Sizes
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MillimetersInternational O-<strong>ring</strong> Standard <strong>Sizes</strong><strong>BS1806</strong>InchesInternal Internal Cross Internal Internal CrossDiameter Diameter Section Standard O-<strong>ring</strong> Size Diameter Diameter Section(mm) Tolerance +/- (mm) (inches) Tolerance +/- (inches)0.74 0.10 1.02+/- 0.08<strong>BS1806</strong>-001 0.029 0.0041.07 0.101.27+/- 0.08<strong>BS1806</strong>-002 0.042 0.0041.42 0.101.53+/- 0.08<strong>BS1806</strong>-003 0.056 0.0041.78 0.13 <strong>BS1806</strong>-004 0.070 0.0052.57 0.13 <strong>BS1806</strong>-005 0.101 0.0052.90 0.13 <strong>BS1806</strong>-006 0.114 0.0053.69 0.13 <strong>BS1806</strong>-007 0.145 0.0054.47 0.13 <strong>BS1806</strong>-008 0.176 0.0055.28 0.13 <strong>BS1806</strong>-009 0.208 0.0056.07 0.13 <strong>BS1806</strong>-010 0.239 0.0057.65 0.13 <strong>BS1806</strong>-011 0.301 0.0059.25 0.13 <strong>BS1806</strong>-012 0.364 0.00510.82 0.13 <strong>BS1806</strong>-013 0.426 0.00512.42 0.13 <strong>BS1806</strong>-014 0.489 0.00514.00 0.18 <strong>BS1806</strong>-015 0.551 0.00715.60 0.23 <strong>BS1806</strong>-016 0.614 0.00917.16 0.23 <strong>BS1806</strong>-017 0.676 0.00918.77 0.23 <strong>BS1806</strong>-018 0.739 0.00920.35 0.23 <strong>BS1806</strong>-019 0.801 0.00921.95 0.23 <strong>BS1806</strong>-020 0.864 0.00923.52 0.23 <strong>BS1806</strong>-021 0.926 0.00925.12 0.25 <strong>BS1806</strong>-022 0.989 0.01026.70 0.25 <strong>BS1806</strong>-023 1.051 0.01028.30 0.25 <strong>BS1806</strong>-024 1.114 0.01029.87 0.28 <strong>BS1806</strong>-025 1.176 0.01131.47 0.28 <strong>BS1806</strong>-026 1.239 0.01133.05 0.281.78<strong>BS1806</strong>-027 1.301 0.011+/- 0.0834.65 0.33 <strong>BS1806</strong>-028 1.364 0.01337.82 0.33 <strong>BS1806</strong>-029 1.489 0.01341.00 0.33 <strong>BS1806</strong>-030 1.614 0.01344.17 0.38 <strong>BS1806</strong>-031 1.739 0.01547.35 0.38 <strong>BS1806</strong>-032 1.864 0.01550.52 0.46 <strong>BS1806</strong>-033 1.989 0.01853.70 0.46 <strong>BS1806</strong>-034 2.114 0.01856.87 0.46 <strong>BS1806</strong>-035 2.239 0.01860.04 0.46 <strong>BS1806</strong>-036 2.364 0.01863.22 0.46 <strong>BS1806</strong>-037 2.489 0.01866.40 0.51 <strong>BS1806</strong>-038 2.614 0.02069.57 0.51 <strong>BS1806</strong>-039 2.739 0.02072.75 0.51 <strong>BS1806</strong>-040 2.864 0.02075.92 0.61 <strong>BS1806</strong>-041 2.989 0.02482.27 0.61 <strong>BS1806</strong>-042 3.239 0.02488.62 0.61 <strong>BS1806</strong>-043 3.489 0.02494.97 0.69 <strong>BS1806</strong>-044 3.739 0.027101.32 0.69 <strong>BS1806</strong>-045 3.989 0.027107.67 0.76 <strong>BS1806</strong>-046 4.239 0.030114.02 0.76 <strong>BS1806</strong>-047 4.489 0.030120.37 0.76 <strong>BS1806</strong>-048 4.739 0.030126.72 0.94 <strong>BS1806</strong>-049 4.989 0.037133.07 0.94 <strong>BS1806</strong>-050 5.239 0.0371.24 0.13 <strong>BS1806</strong>-102 0.049 0.0052.06 0.13 <strong>BS1806</strong>-103 0.081 0.0052.84 0.13 <strong>BS1806</strong>-104 0.112 0.0053.63 0.13 2.62<strong>BS1806</strong>-105 0.143 0.005+/- 0.084.42 0.13 <strong>BS1806</strong>-106 0.174 0.0055.23 0.13 <strong>BS1806</strong>-107 0.206 0.0056.02 0.13 <strong>BS1806</strong>-108 0.237 0.0050.040+/- 0.0030.050+/- 0.0030.060+/- 0.0030.070+/- 0.0030.103+/- 0.003<strong>BS1806</strong> British Standard O-<strong>ring</strong> sizes (imperial)PAGE 1www.perlast.com
MillimetersInternational O-<strong>ring</strong> Standard <strong>Sizes</strong><strong>BS1806</strong> British Standard O-<strong>ring</strong> sizes (imperial)<strong>BS1806</strong>InchesInternal Internal Cross Internal Internal CrossDiameter Diameter Section Standard O-<strong>ring</strong> Size Diameter Diameter Section(mm) Tolerance +/- (mm) (inches) Tolerance +/- (inches)69.22 0.51 <strong>BS1806</strong>-335 2.725 0.02072.39 0.51 <strong>BS1806</strong>-336 2.850 0.02075.57 0.61 <strong>BS1806</strong>-337 2.975 0.02478.74 0.61 <strong>BS1806</strong>-338 3.100 0.02481.92 0.61 <strong>BS1806</strong>-339 3.225 0.02485.09 0.61 <strong>BS1806</strong>-340 3.350 0.02488.27 0.61 <strong>BS1806</strong>-341 3.475 0.02491.44 0.71 <strong>BS1806</strong>-342 3.600 0.02894.62 0.71 <strong>BS1806</strong>-343 3.725 0.02897.79 0.71 <strong>BS1806</strong>-344 3.850 0.028100.97 0.71 <strong>BS1806</strong>-345 3.975 0.028104.14 0.71 <strong>BS1806</strong>-346 4.100 0.028107.32 0.76 <strong>BS1806</strong>-347 4.225 0.030110.49 0.76 <strong>BS1806</strong>-348 4.350 0.030113.67 0.76 <strong>BS1806</strong>-349 4.475 0.030116.84 0.76 <strong>BS1806</strong>-350 4.600 0.030120.02 0.76 <strong>BS1806</strong>-351 4.725 0.030123.19 0.76 <strong>BS1806</strong>-352 4.850 0.030126.37 0.94 <strong>BS1806</strong>-353 4.975 0.037129.54 0.94 <strong>BS1806</strong>-354 5.100 0.037132.72 0.94 <strong>BS1806</strong>-355 5.225 0.037135.89 0.94 <strong>BS1806</strong>-356 5.350 0.037139.07 0.94 <strong>BS1806</strong>-357 5.475 0.037142.24 0.94 <strong>BS1806</strong>-358 5.600 0.037145.42 0.94 <strong>BS1806</strong>-359 5.725 0.037148.59 0.94 <strong>BS1806</strong>-360 5.850 0.037151.77 0.94 <strong>BS1806</strong>-361 5.975 0.037158.12 1.02 <strong>BS1806</strong>-362 6.225 0.040164.47 1.02 <strong>BS1806</strong>-363 6.475 0.040170.82 1.02 5.33<strong>BS1806</strong>-364 6.725 0.040177.17 1.02 +/- 0.13<strong>BS1806</strong>-365 6.975 0.040183.52 1.14 <strong>BS1806</strong>-366 7.225 0.045189.87 1.14 <strong>BS1806</strong>-367 7.475 0.045196.22 1.14 <strong>BS1806</strong>-368 7.725 0.045202.57 1.14 <strong>BS1806</strong>-369 7.975 0.045208.92 1.27 <strong>BS1806</strong>-370 8.225 0.050215.27 1.27 <strong>BS1806</strong>-371 8.475 0.050221.62 1.27 <strong>BS1806</strong>-372 8.725 0.050227.97 1.27 <strong>BS1806</strong>-373 8.975 0.050234.32 1.40 <strong>BS1806</strong>-374 9.225 0.055240.67 1.40 <strong>BS1806</strong>-375 9.475 0.055247.02 1.40 <strong>BS1806</strong>-376 9.725 0.055253.37 1.40 <strong>BS1806</strong>-377 9.975 0.055266.07 1.52 <strong>BS1806</strong>-378 10.475 0.060278.77 1.52 <strong>BS1806</strong>-379 10.975 0.060291.47 1.65 <strong>BS1806</strong>-380 11.475 0.065304.17 1.65 <strong>BS1806</strong>-381 11.975 0.065329.57 1.65 <strong>BS1806</strong>-382 12.975 0.065354.97 1.78 <strong>BS1806</strong>-383 13.975 0.070380.37 1.78 <strong>BS1806</strong>-384 14.975 0.070405.26 1.91 <strong>BS1806</strong>-385 15.955 0.075430.66 2.03 <strong>BS1806</strong>-386 16.955 0.080456.06 2.16 <strong>BS1806</strong>-387 17.955 0.085481.46 2.29 <strong>BS1806</strong>-388 18.955 0.090506.86 2.41 <strong>BS1806</strong>-389 19.955 0.095532.26 2.41 <strong>BS1806</strong>-390 20.955 0.095557.66 2.54 <strong>BS1806</strong>-391 21.955 0.100582.68 2.67 <strong>BS1806</strong>-392 22.940 0.105608.08 2.79 <strong>BS1806</strong>-393 23.940 0.110633.48 2.92 <strong>BS1806</strong>-394 24.940 0.1150.210+/- 0.005PAGE 5www.perlast.com
MillimetersInternational O-<strong>ring</strong> Standard <strong>Sizes</strong><strong>BS1806</strong>InchesInternal Internal Cross Internal Internal CrossDiameter Diameter Section Standard O-<strong>ring</strong> Size Diameter Diameter Section(mm) Tolerance +/- (mm) (inches) Tolerance +/- (inches)658.88 3.05 5.33+/- 0.13<strong>BS1806</strong>-395 25.940 0.120113.67 0.84 <strong>BS1806</strong>-425 4.475 0.033116.84 0.84 <strong>BS1806</strong>-426 4.600 0.033120.02 0.84 <strong>BS1806</strong>-427 4.725 0.033123.20 0.84 <strong>BS1806</strong>-428 4.850 0.033126.37 0.94 <strong>BS1806</strong>-429 4.975 0.037129.54 0.94 <strong>BS1806</strong>-430 5.100 0.037132.72 0.94 <strong>BS1806</strong>-431 5.225 0.037135.90 0.94 <strong>BS1806</strong>-432 5.350 0.037139.07 0.94 <strong>BS1806</strong>-433 5.475 0.037142.24 0.94 <strong>BS1806</strong>-434 5.600 0.037145.42 0.94 <strong>BS1806</strong>-435 5.725 0.037148.60 0.94 <strong>BS1806</strong>-436 5.850 0.037151.77 0.94 <strong>BS1806</strong>-437 5.975 0.037158.12 1.02 <strong>BS1806</strong>-438 6.225 0.040164.47 1.02 <strong>BS1806</strong>-439 6.475 0.040170.82 1.02 <strong>BS1806</strong>-440 6.725 0.040177.17 1.02 <strong>BS1806</strong>-441 6.975 0.040183.52 1.14 <strong>BS1806</strong>-442 7.225 0.045189.87 1.14 <strong>BS1806</strong>-443 7.475 0.045196.22 1.14 <strong>BS1806</strong>-444 7.725 0.045202.57 1.14 <strong>BS1806</strong>-445 7.975 0.045215.27 1.40 <strong>BS1806</strong>-446 8.475 0.055227.97 1.40 <strong>BS1806</strong>-447 8.975 0.055240.67 1.40 <strong>BS1806</strong>-448 9.475 0.055253.57 1.40 <strong>BS1806</strong>-449 9.983 0.055266.07 1.526.99<strong>BS1806</strong>-450 10.475 0.060+/- 0.15278.77 1.52 <strong>BS1806</strong>-451 10.975 0.060291.47 1.52 <strong>BS1806</strong>-452 11.475 0.060304.17 1.52 <strong>BS1806</strong>-453 11.975 0.060316.87 1.52 <strong>BS1806</strong>-454 12.475 0.060329.57 1.52 <strong>BS1806</strong>-455 12.975 0.060342.27 1.78 <strong>BS1806</strong>-456 13.475 0.070354.97 1.78 <strong>BS1806</strong>-457 13.975 0.070367.67 1.78 <strong>BS1806</strong>-458 14.475 0.070380.37 1.78 <strong>BS1806</strong>-459 14.975 0.070393.07 1.78 <strong>BS1806</strong>-460 15.475 0.070405.26 1.91 <strong>BS1806</strong>-461 15.955 0.075417.96 1.91 <strong>BS1806</strong>-462 16.455 0.075430.66 2.03 <strong>BS1806</strong>-463 16.955 0.080443.36 2.16 <strong>BS1806</strong>-464 17.455 0.085456.06 2.16 <strong>BS1806</strong>-465 17.955 0.085468.76 2.16 <strong>BS1806</strong>-466 18.455 0.085481.46 2.29 <strong>BS1806</strong>-467 18.955 0.090494.16 2.29 <strong>BS1806</strong>-468 19.455 0.090506.86 2.41 <strong>BS1806</strong>-469 19.955 0.095532.26 2.41 <strong>BS1806</strong>-470 20.955 0.095557.66 2.54 <strong>BS1806</strong>-471 21.955 0.100582.68 2.67 <strong>BS1806</strong>-472 22.940 0.105608.08 2.79 <strong>BS1806</strong>-473 23.940 0.110633.48 2.92 <strong>BS1806</strong>-474 24.940 0.115658.88 3.05 <strong>BS1806</strong>-475 25.940 0.1200.210+/- 0.0050.275+/- 0.006<strong>BS1806</strong> British Standard O-<strong>ring</strong> sizes (imperial)PAGE 6www.perlast.com
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