British Standard O-Rings are very similar to Standard O-Rings in the fact that they are both standardized imperically. The British Standard however, incorporates some extended sizes in the 1/4" nominal cross section group for an even broader application range. British Standard O-Rings serve a variety of industries including aerospace, paint, food, and chemical transport. Polyurethane is also known as urethane, cast urethan and millable urethane.

Polyurethane is also known as urethane, cast urethan and millable urethane. Exceptional tensile strength. Abrasion and low temperature resistance. Typical applications include hydraulic seals, gaskets, diaphragms, hoses, and wheels for skate boards. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
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O-Ring Industries

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N/A
183261
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 10.725 in272.42 mm N/A 0.006 in0.15 mm N/A -450A N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
183262
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 90 N/A 10.725 in272.42 mm N/A 0.006 in0.15 mm N/A -450A N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182695
N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 10.975 in278.77 mm N/A 0.005 in0.13 mm N/A -379 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182696
N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 10.975 in278.77 mm N/A 0.005 in0.13 mm N/A -379 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182609
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 10.975 in278.77 mm N/A 0.006 in0.15 mm N/A -451 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182610
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 90 N/A 10.975 in278.77 mm N/A 0.006 in0.15 mm N/A -451 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182847
N/A BS Standard O-Ring N/A Polyurethane N/A 0.139 in3.53 mm N/A 70 N/A 10.984 in278.99 mm N/A 0.004 in0.10 mm N/A -276 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182848
N/A BS Standard O-Ring N/A Polyurethane N/A 0.139 in3.53 mm N/A 90 N/A 10.984 in278.99 mm N/A 0.004 in0.10 mm N/A -276 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
183263
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 11.225 in285.12 mm N/A 0.006 in0.15 mm N/A -451A N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
183264
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 90 N/A 11.225 in285.12 mm N/A 0.006 in0.15 mm N/A -451A N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182607
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 11.475 in291.47 mm N/A 0.006 in0.15 mm N/A -452 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182608
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 90 N/A 11.475 in291.47 mm N/A 0.006 in0.15 mm N/A -452 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182693
N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 11.475 in291.47 mm N/A 0.005 in0.13 mm N/A -380 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182694
N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 11.475 in291.47 mm N/A 0.005 in0.13 mm N/A -380 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182845
N/A BS Standard O-Ring N/A Polyurethane N/A 0.139 in3.53 mm N/A 70 N/A 11.484 in291.69 mm N/A 0.004 in0.10 mm N/A -277 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182846
N/A BS Standard O-Ring N/A Polyurethane N/A 0.139 in3.53 mm N/A 90 N/A 11.484 in291.69 mm N/A 0.004 in0.10 mm N/A -277 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
183265
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 11.725 in297.82 mm N/A 0.006 in0.15 mm N/A -452A N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
183266
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 90 N/A 11.725 in297.82 mm N/A 0.006 in0.15 mm N/A -452A N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182691
N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 70 N/A 11.975 in304.17 mm N/A 0.005 in0.13 mm N/A -381 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182692
N/A BS Standard O-Ring N/A Polyurethane N/A 0.210 in5.33 mm N/A 90 N/A 11.975 in304.17 mm N/A 0.005 in0.13 mm N/A -381 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182605
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 11.975 in304.17 mm N/A 0.006 in0.15 mm N/A -453 N/A N/A O-rings are used in the military defense and agriculture industries.v
N/A
182606
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 90 N/A 11.975 in304.17 mm N/A 0.006 in0.15 mm N/A -453 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182843
N/A BS Standard O-Ring N/A Polyurethane N/A 0.139 in3.53 mm N/A 70 N/A 11.984 in304.39 mm N/A 0.004 in0.10 mm N/A -278 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182844
N/A BS Standard O-Ring N/A Polyurethane N/A 0.139 in3.53 mm N/A 90 N/A 11.984 in304.39 mm N/A 0.004 in0.10 mm N/A -278 N/A N/A O-rings are used in the military defense and agriculture industries.
N/A
182455
N/A BS Standard O-Ring N/A Polyurethane N/A 0.275 in6.99 mm N/A 70 N/A 12.225 in310.52 mm N/A 0.006 in0.15 mm N/A -648 N/A N/A O-rings are used in the military defense and agriculture industries.v
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