High Performance Sealing Solutions

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Back-up Rings

Imperial

Open Drawing

O Ring SectionRadial Width 'S'Groove width 'L'Radius 'R1' MaxChamfer 'C' Min
One back-up ringTwo back-up rings
Max.Min.Max.Min.Max.Min.
0.070"0.062"0.060"0.152"0.147"0.210"0.205"0.030"0.085"
0.103"0.094"0.091"0.199"0.194"0.257"0.252"0.030"0.097"
0.139"0.125"0.122"0.247"0.241"0.305"0.299"0.030"0.103"
0.210"0.188"0.184"0.355"0.348"0.427"0.420"0.030"0.156"
0.275"0.250"0.245"0.480"0.473"0.582"0.576"0.030"0.187"

Metric

Open Drawing

O Ring SectionRadial Width 'S'Groove width 'L'Radius 'R1' MaxChamfer 'C' Min
One back-up ringTwo back-up rings
Max.Min.Max.Min.Max.Min.
1.6 mm1.3 mm1.25 mm4.0 mm3.8 mm5.4 mm5.2 mm0.5 mm2.2 mm
2.4 mm2.09 mm1.97 mm4.8 mm4.6 mm6.2 mm6.0 mm0.5 mm2.2 mm
3.0 mm2.65 mm2.50 mm5.6 mm5.4 mm7.0 mm6.8 mm1.0 mm2.6 mm
5.7 mm5.18 mm4.95 mm9.5 mm9.3 mm11.3 mm11.1 mm1.0 mm3.7 mm

BS1806 (Imperial)

Open Drawing

Size Ref:Nominal Dimensions
Od, mmOD, mmT mmO ring section
BS0050.1090.2340.050 to 0.0580.070
BS0060.1250.250
BS0070.1560.281
BS0080.1870.312
BS0090.2190.344
BS0100.2500.375
BS0110.3120.437
BS0120.3750.500
BS0130.4370.562
BS0140.5000.625
BS0150.5620.687
BS0160.6250.750
BS0170.6870.812
BS0180.7500.875
BS0190.8120.937
BS0200.8751.000
BS0210.9371.062
BS0221.0001.125
BS0231.0621.187
BS0241.1251.250
BS0251.1871.312
BS0261.2501.375
BS0271.3121.437
BS0281.3751.500
BS0291.5001.625
BS0301.6251.750
BS0311.7501.875
BS0321.8752.000
BS0332.0002.125
BS0342.1252.250
BS0352.2502.375
BS0362.3752.500
BS0372.5002.625
BS0382.6252.750
BS0392.7502.875
BS0402.8753.000
BS0413.0003.125
BS0423.2503.375
BS0433.5003.625
BS0443.7503.875
BS0454.0004.125
BS0464.2504.375
BS0474.5004.625
BS0484.7504.875
BS0495.0005.125
BS0505.2505.375
BS1080.2500.4370.050 to 0.0580.103
BS1090.3120.500
BS1100.3750.562
BS1110.4370.625
BS1120.5000.687
BS1130.5620.750
BS1140.6250.812
BS1150.6870.875
BS1160.7500.937
BS1170.8121.000
BS1180.8751.062
BS1190.9371.125
BS1201.0001.187
BS1211.0621.250
BS1221.1251.312
BS1231.1871.375
BS1241.2501.437
BS1251.3121.500
BS1261.3751.562
BS1271.4371.625
BS1281.5001.687
BS1291.5621.750
BS1301.6251.812
BS1311.6871.875
BS1321.7501.937
BS1331.8122.000
BS1341.8752.062
BS1351.9372.125
BS1362.0002.187
BS1372.0622.250
BS1382.1252.312
BS1392.1872.375
BS1402.2502.437
BS1412.3122.500
BS1422.3752.562
BS1432.4372.625
BS1442.5002.687
BS1452.5622.750
BS1462.6252.812
BS1472.6872.875
BS1482.7502.937
BS1492.8123.000
BS1502.8753.062
BS1513.0003.187
BS1523.2503.437
BS1533.5003.687
BS1543.7503.937
BS1554.0004.187
BS1564.2504.437
BS1574.5004.687
BS1584.7504.937
BS1595.0005.187
BS1605.2505.437
BS 1615.5005.687
BS 1625.7505.937
BS2060.5000.7500.050 to 0.0580.139
BS2070.5620.812
BS2080.6250.875
BS2090.6870.937
BS2100.7501.000
BS2110.8121.062
BS2120.8751.125
BS2130.9371.187
BS2141.0001.250
BS2151.0621.312
BS2161.1251.375
BS2171.1871.437
BS2181.2501.500
BS2191.3121.562
BS2201.3751.625
BS2211.4371.687
BS2221.5001.750
BS2231.6251.875
BS2241.7502.000
BS2251.8752.125
BS2262.0002.250
BS2272.1252.375
BS2282.2502.500
BS2292.3752.625
BS2302.5002.750
BS2312.6252.875
BS2322.7503.000
BS2332.8753.125
BS2343.0003.250
BS2353.1253.375
BS2363.2503.500
BS2373.3753.625
BS2383.5003.750
BS2393.6253.875
BS2403.7504.000
BS2413.8754.125
BS2424.0004.250
BS2434.1254.375
BS2444.2504.500
BS2454.3754.625
BS2464.5004.750
BS2474.6254.875
BS2484.7505.000
BS2494.8755.125
BS2505.0005.250
BS2515.1255.375
BS2525.2505.500
BS2535.3755.625
BS2545.5005.750
BS2555.6255.875
BS2565.7506.000
BS2575.8756.125
BS2586.0006.250
BS2596.2506.500
BS2606.5006.750
BS2616.7507.000
BS2627.0007.250
BS2637.2507.500
BS2647.5007.750
BS2657.7508.000
BS2668.0008.250
BS2678.2508.500
BS2688.5008.750
BS2698.7509.000
BS2709.0009.250
BS2719.2509.500
BS2729.5009.750
BS2739.75010.000
BS27410.00010.250
BS27510.50010.750
BS27611.00011.250
BS27711.50011.750
BS27812.00012.250
BS27913.00013.250
BS28014.00014.250
BS28115.00015.250
BS28216.00016.250
BS28317.00017.250
BS28418.00018.250
BS3140.7501.1250.062 to 0.0720.210
BS3150.8121.187
BS3160.8751.250
BS3170.9371.312
BS3181.0001.375
BS3191.0621.437
BS3201.1251.500
BS3211.1871.562
BS3221.2501.625
BS3231.3121.687
BS3241.3751.750
BS3251.5001.875
BS3261.6252.000
BS3271.7502.125
BS3281.8752.250
BS3292.0002.375
BS3302.1252.500
BS3312.2502.625
BS3322.3752.750
BS3332.5002.875
BS3342.6253.000
BS3352.7503.125
BS3362.8753.250
BS3373.0003.375
BS3383.1253.500
BS3393.2503.625
BS3403.3753.750
BS3413.5003.875
BS3423.6254.000
BS3433.7504.125
BS3443.8754.250
BS3454.0004.375
BS3464.1254.500
BS3474.2504.625
BS3484.3754.750
BS3494.5004.875
BS3504.6255.000
BS3514.7505.125
BS3524.8755.250
BS3535.0005.375
BS3545.1255.500
BS3555.2505.625
BS3565.3755.750
BS3575.5005.875
BS3585.6256.000
BS3595.7506.125
BS3605.8756.250
BS3616.0006.375
BS3626.2506.625
BS3636.5006.875
BS3646.7507.125
BS3657.0007.375
BS3667.2507.625
BS3677.5007.875
BS3687.7508.125
BS3698.0008.375
BS3708.2508.625
BS3718.5008.875
BS3728.7509.125
BS3739.0009.375
BS3749.2509.625
BS3759.5009.875
BS3769.75010.125
BS37710.00010.375
BS37810.50010.875
BS37911.00011.375
BS38011.50011.875
BS38112.00012.375
BS38213.00013.375
BS38314.00014.375
BS38415.00015.375
BS38516.00016.375
BS38617.00017.375
BS38718.00018.375
BS38819.00019.375
BS38920.00020.375
BS39021.00021.375
BS39122.00022.375
BS39223.00023.375
BS39324.00024.375
BS39425.00025.375
BS39526.00026.375
BS4254.5005.0000.092 to 0.1040.275
BS4264.6255.125
BS4274.7505.250
BS4284.8755.375
BS4295.0005.500
BS4305.1255.625
BS4315.2505.750
BS4325.3755.875
BS4335.5006.000
BS4345.6256.125
BS4355.7506.250
BS4365.8756.375
BS4376.0006.500
BS4386.2506.750
BS4396.5007.000
BS4406.7507.250
BS4417.0007.500
BS4427.2507.750
BS4437.5008.000
BS4447.7508.250
BS4458.0008.500
BS445A8.2508.750
BS4468.5009.000
BS446A8.7509.250
BS4479.0009.500
BS447A9.2509.750
BS4489.50010.000
BS448A9.75010.250
BS44910.00010.500
BS449A10.25010.750
BS45010.50011.000
BS450A10.75011.250
BS45111.00011.500
BS451A11.25011.750
BS45211.50012.000
BS452A11.75012.250
BS45312.00012.500
BS45412.50013.000
BS45513.00013.500
BS45613.50014.000
BS45714.00014.500
BS45814.50015.000
BS45915.00015.500
BS46015.50016.000
BS46116.00016.500
BS46216.50017.000
BS46317.00017.500
BS46417.50018.000
BS46518.00018.500
BS46618.50019.000
BS46719.00019.500
BS46819.50020.000
BS46920.00020.500
BS47021.00021.500
BS47122.00022.500
BS47223.00023.500
BS47324.00024.500
BS47425.00025.500
BS47526.00026.500

BS45186 (Metric)

Open Drawing

Size Ref:Nominal Dimensions
Od, mmOD, mmT mmO ring section
BS0031-163.506.001.20 to 1.401.600
BS0041-164.507.00
BS0051-165.508.00
BS0061-166.509.00
BS0071-167.5010.00
BS0081-168.5011.00
BS0091-169.5012.00
BS0101-1610.5013.00
BS0111-1611.5014.00
BS0121-1612.5015.00
BS0131-1613.5016.00
BS0141-1614.5017.00
BS0151-1615.5018.00
BS0161-1616.5019.00
BS0171-1617.5020.00
BS0181-1618.5021.00
BS0191-1619.5022.00
BS0221-1622.5025.00
BS0251-1625.5028.00
BS0271-1627.5030.00
BS0291-1629.5032.00
BS0321-1632.5035.00
BS0351-1635.5038.00
BS0371-1637.5040.00
BS0036-244.008.001.20 to 1.402.400
BS0046-245.009.00
BS0056-246.0010.00
BS0066-247.0011.00
BS0076-248.0012.00
BS0086-249.0013.00
BS0096-2410.0014.00
BS0106-2411.0015.00
BS0116-2412.0016.00
BS0126-2413.0017.00
BS0136-2414.0018.00
BS0146-2415.0019.00
BS0156-2416.0020.00
BS0166-2417.0021.00
BS0176-2418.0022.00
BS0186-2419.0023.00
BS0196-2420.0024.00
BS0206-2421.0025.00
BS0216-2422.0026.00
BS0246-2425.0029.00
BS0276-2428.0032.00
BS0296-2430.0034.00
BS0316-2432.0036.00
BS0346-2435.0039.00
BS0356-2436.0040.00
BS0376-2438.0042.00
BS0396-2440.0044.00
BS0416-2442.0046.00
BS0446-2445.0049.00
BS0456-2446.0050.00
BS0476-2448.0052.00
BS0496-2450.0054.00
BS0516-2452.0056.00
BS0536-2454.0058.00
BS0546-2455.0059.00
BS0576-2458.0062.00
BS0586-2459.0063.00
BS0596-2460.0064.00
BS0616-2462.0066.00
BS0626-2463.0067.00
BS0646-2465.0069.00
BS0676-2468.0072.00
BS0696-2470.0074.00
BS0195-3020.0025.001.20 to 1.403.000
BS0215-3022.0027.00
BS0225-3023.0028.00
BS0245-3025.0030.00
BS0255-3026.0031.00
BS0265-3027.0032.00
BS0275-3028.0033.00
BS0295-3030.0035.00
BS0315-3032.0037.00
BS0325-3033.0038.00
BS0345-3035.0040.00
BS0355-3036.0041.00
BS0365-3037.0042.00
BS0375-3038.0043.00
BS0395-3040.0045.00
BS0415-3042.0047.00
BS0425-3043.0048.00
BS0445-3045.0050.00
BS0495-3050.0055.00
BS0545-3055.0060.00
BS0555-3056.0061.00
BS0575-3058.0063.00
BS0595-3060.0065.00
BS0635-3064.0069.00
BS0645-3065.0070.00
BS0695-3070.0075.00
BS0745-3075.0080.00
BS0795-3080.0085.00
BS0845-3085.0090.00
BS0895-3090.0095.00
BS0945-3095.00100.00
BS0995-30100.00105.00
BS1045-30105.00110.00
BS1095-30110.00115.00
BS1145-30115.00120.00
BS1195-30120.00125.00
BS1245-30125.00130.00
BS1295-30130.00135.00
BS1345-30135.00140.00
BS1395-30140.00145.00
BS1445-30145.00150.00
BS1495-30150.00155.00
BS1545-30155.00160.00
BS1595-30160.00165.00
BS1645-30165.00170.00
BS1695-30170.00175.00
BS1745-30175.00180.00
BS1795-30180.00185.00
BS1845-30185.00190.00
BS1895-30190.00195.00
BS1945-30195.00200.00
BS1995-30200.00205.00
BS2045-30205.00210.00
BS2095-30210.00215.00
BS2195-30220.00225.00
BS2295-30230.00235.00
BS2395-30240.00245.00
BS2495-30250.00255.00
BS0443-5745.0055.001.60 to 1.805.700
BS0453-5746.0056.00
BS0493-5750.0060.00
BS0523-5753.0063.00
BS0543-5755.0065.00
BS0553-5756.0066.00
BS0593-5760.0070.00
BS0623-5763.0073.00
BS0643-5765.0075.00
BS0693-5770.0080.00
BS0743-5775.0085.00
BS0793-5780.0090.00
BS0843-5785.0095.00
BS0893-5790.00100.00
BS0943-5795.00105.00
BS0993-57100.00110.00
BS1043-57105.00115.00
BS1093-57110.00120.00
BS1143-57115.00125.00
BS1193-57120.00130.00
BS1243-57125.00135.00
BS1293-57130.00140.00
BS1343-57135.00145.00
BS1393-57140.00150.00
BS1443-57145.00155.00
BS1493-57150.00160.00
BS1543-57155.00165.00
BS1593-57160.00170.00
BS1643-57165.00175.00
BS1693-57170.00180.00
BS1743-57175.00185.00
BS1793-57180.00190.00
BS1843-57185.00195.00
BS1893-57190.00200.00
BS1943-57195.00205.00
BS1993-57200.00210.00
BS2043-57205.00215.00
BS2093-57210.00220.00
BS2143-57215.00225.00
BS2193-57220.00230.00
BS2293-57230.00240.00
BS2393-57240.00250.00
BS2493-57250.00260.00
BS2593-57260.00270.00
BS2693-57270.00280.00
BS2793-57280.00290.00
BS2893-57290.00300.00
BS2993-57300.00310.00
BS3193-57320.00330.00
BS3393-57340.00350.00
BS3593-57360.00370.00
BS3793-57380.00390.00
BS3993-57400.00410.00
BS4193-57420.00430.00
BS4393-57440.00450.00
BS4593-57460.00470.00
BS4793-57480.00490.00
BS4893-57490.00500.00
BS4993-57500.00510.00