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Standard Size O-ring Charts
Navigation Size Chart 2
New Sizes Available (400 Series)
No. I.D." Actual O.D."   No. I.D." Actual O.D."   No. I.D." Actual O.D."
-400 1-3/8 1.350 1-7/8   -408 2-3/8 2.350 2-7/8   -416 3-3/8 3.350 3-7/8
-401 1-1/2 1-1/2 1.475   -409 2/1/2 2.475 3   -417 3-1/2 3.475 4
-402 1-5/8 1-5/8 1.600   -410 2-5/8 2.600 3-1/8   -418 3-5/8 3.600 4-1/8
-403 1-3/4 1-3/4 1.725   -411 2-3/4 2.725 3-1/4   -419 3-3/4 3.725 4-1/4
-404 1-7/8 1.850 2-3/8   -412 2-7/8 2.850 3-3/8   -420 3-7/8 3.850 4-3/8
-405 2 1.795 2-1/2   -413 3 2.975 3-1/2   -421 4 3.975 4-1/2
-406 2-1/8 2.100 2-5/8   -414 3-1/8 3.100 3-5/8   -422 4-1/8 4.100 4-5/8
-407 2-1/4 2.225 2-3/4   -415 3-1/4 3.225 3-3/4   -423 4-1/4 4.225 4-3/4
                    -424 4-3/8 4.350 4-7/8
 
1/4" Cross-Section (w), actual .275"
No. I.D." Actual O.D."   No. I.D." Actual O.D."   No. I.D." Actual O.D."
-425 4-1/2 4.475 5   -442 7-1/4 7.225 7-3/4   -459 15 14.975 15-1/2
-426 4-5/8 4.600 5-1/8   -443 7-1/2 7.475 8   -460 15-1/2 15.475 16
-427 4-3/4 4.725 5-1/4   -444 7-3/4 7.725 8-1/4   -461 16 15.955 16-1/2
-428 4-7/8 4.850 5-3/8   -445 8 7.975 8-1/2   -462 16-1/2 16.455 17
-429 5 4.975 5-1/2   -446 8.1/2 8.475 9   -463 17 16.955 17-1/2
-430 5-1/8 5.100 5-5/8   -447 9 8.975 9-1/2   -464 17-1/2 17.455 18
-431 5-1/4 5.225 5-3/4   -448 9-1/2 9.475 10   -465 18 17.955 18-1/2
-432 5-3/8 5.350 5-7/8   -449 10 9.975 10-1/2   -466 18-1/2 18.455 19
-433 5-1/2 5.475 6   -450 10-1/2 10.475 11   -467 19 18.955 19-1/2
-434 5-5/8 5.600 6-1/8   -451 11 10.975 11-1/2   -468 19-1/2 19.455 20
-435 5-3/4 5.725 6-1/4   -452 11-1/2 11.475 12   -469 20 19.955 20-1/2
-436 5-7/8 5.850 6-3/8   -453 12 11.975 12-1/2   -470 21 20.955 21-1/2
-437 6 5.975 6-1/2   -454 12-1/2 12.475 13   -471 22 21.955 22-1/2
-438 6-1/4 6.225 6-3/4   -455 13 12.975 13-1/2   -472 23 22.490 23-1/2
-439 6-1/2 6.475 7   -456 13-1/2 13.475 14   -473 24 23.490 24-1/2
-440 6-3/4 6.725 7-1/4   -457 13.975 13.975 14-1/2   -474 25 24.490 25-1/2
-441 7 6.975 7-1/2   -458 14-1/2 14.475 15   -475 26 25.940 26-1/2

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