9-9
Sizes
Parker Hannifi n Corporation • O-Ring Division
2360 Palumbo Drive, Lexington, KY 40509
Phone: (859) 269-2351 • Fax: (859) 335-5128
www.parkerorings.com
Parker O-Ring Handbook
Parker Series 2-XXX O-Ring Sizes (Continued)
12 3 4 5 6 7
Parker
Size No.
(Size Only)
(a)
Size
Only
Nominal
Size
(Inches)
Standard O-Ring Size
(Units are in Inches)
Actual (b) Per AS 568A
(Ref.
Only)
Metric O-Ring Size
(Units are in Millimeteres)
Actual (b) Per AS 568A
Parker
Size No.
(Size Only)
(a)
AS 568A
Uniform
Dash No.
(Ref. Only)
I.D.
Tolerance
±
W±
Basic
Volume
Cu. In. I.D.
Tolerance
±
W±I.D. O.D. W.
2-378 -378 10-1/2 10-7/8 3/16 10.475 .060 .210 .005 1.1627 266,07 1,52 5,33 0,13 2-378
2-379 -379 11 11-3/8 3/16 10.975 .060 .210 .005 1.2171 278,77 1,52 5,33 0,13 2-379
2-380 -380 11-1/2 11-7/8 3/16 11.475 .065 .210 .005 1.2715 291,47 1,65 5,33 0,13 2-380
2-381 -381 12 12-3/8 3/16 11.975 .065 .210 .005 1.3259 304,17 1,65 5,33 0,13 2-381
2-382 -382 13 13-3/8 3/16 12.975 .065 .210 .005 1.4347 329,57 1,65 5,33 0,13 2-382
2-383 -383 14 14-3/8 3/16 13.975 .070 .210 .005 1.5435 354,97 1,78 5,33 0,13 2-383
2-384 -384 15 15-3/8 3/16 14.975 .070 .210 .005 1.6523 380,37 1,78 5,33 0,13 2-384
2-385 -385 16 16-3/8 3/16 15.955 .075 .210 .005 1.7590 405,26 1,91 5,33 0,13 2-385
2-386 -386 17 17-3/8 3/16 16.955 .080 .210 .005 1.8678 430,66 2,03 5,33 0,13 2-386
2-387 -387 18 18-3/8 3/16 17.955 .085 .210 .005 1.9766 456,06 2,16 5,33 0,13 2-387
2-388 -388 19 19-3/8 3/16 18.955 .090 .210 .005 2.0854 481,46 2,29 5,33 0,13 2-388
2-389 -389 20 20-3/8 3/16 19.955 .095 .210 .005 2.1942 506,86 2,41 5,33 0,13 2-389
2-390 -390 21 21-3/8 3/16 20.955 .095 .210 .005 2.3030 532,26 2,41 5,33 0,13 2-390
2-391 -391 22 22-3/8 3/16 21.955 .100 .210 .005 2.4118 557,66 2,54 5,33 0,13 2-391
2-392 -392 23 23-3/8 3/16 22.940 .105 .210 .005 2.5190 582,68 2,67 5,33 0,13 2-392
2-393 -393 24 24-3/8 3/16 23.940 .110 .210 .005 2.6278 608,08 2,79 5,33 0,13 2-393
2-394 -394 25 25-3/8 3/16 24.940 .115 .210 .005 2.7366 633,48 2,92 5,33 0,13 2-394
2-395 -395 26 26-3/8 3/16 25.940 .120 .210 .005 2.8454 658,88 3,05 5,33 0,13 2-395
2-425 -425 4-1/2 5 1/4 4.475 .033 .275 .006 .8863 113,67 0,84 6,99 0,15 2-425
2-426 -426 4-5/8 5-1/8 1/4 4.600 .033 .275 .006 .9097 116,84 0,84 6,99 0,15 2-426
2-427 -427 4-3/4 5-1/4 1/4 4.725 .033 .275 .006 .9330 120,02 0,84 6,99 0,15 2-427
2-428 -428 4-7/8 5-3/8 1/4 4.850 .033 .275 .006 .9563 123,19 0,84 6,99 0,15 2-428
2-429 -429 5 5-1/2 1/4 4.975 .037 .275 .006 .9796 126,37 0,94 6,99 0,15 2-429
2-430 -430 5-1/8 5-5/8 1/4 5.100 .037 .275 .006 1.0030 129,54 0,94 6,99 0,15 2-430
2-431 -431 5-1/4 5-3/4 1/4 5.225 .037 .275 .006 1.0263 132,72 0,94 6,99 0,15 2-431
2-432 -432 5-3/8 5-7/8 1/4 5.350 .037 .275 .006 1.0496 135,89 0,94 6,99 0,15 2-432
2-433 -433 5-1/2 6 1/4 5.475 .037 .275 .006 1.0729 139,07 0,94 6,99 0,15 2-433
2-434 -434 5-5/8 6-1/8 1/4 5.600 .037 .275 .006 1.0963 142,24 0,94 6,99 0,15 2-434
2-435 -435 5-3/4 6-1/4 1/4 5.725 .037 .275 .006 1.1196 145,42 0,94 6,99 0,15 2-435
2-436 -436 5-7/8 6-3/8 1/4 5.850 .037 .275 .006 1.1429 148,59 0,94 6,99 0,15 2-436
2-437 -437 6 6-1/2 1/4 5.975 .037 .275 .006 1.1662 151,77 0,94 6,99 0,15 2-437
2-438 -438 6-1/4 6-3/4 1/4 6.225 .040 .275 .006 1.2129 158,12 1,02 6,99 0,15 2-438
2-439 -439 6-1/2 7 1/4 6.475 .040 .275 .006 1.2595 164,47 1,02 6,99 0,15 2-439
2-440 -440 6-3/4 7-1/4 1/4 6.725 .040 .275 .006 1.3062 170,82 1,02 6,99 0,15 2-440
2-441 -441 7 7-1/2 1/4 6.975 .040 .275 .006 1.3528 177,17 1,02 6,99 0,15 2-441
2-442 -442 7-1/4 7-3/4 1/4 7.225 .045 .275 .006 1.3995 183,52 1,14 6,99 0,15 2-442
2-443 -443 7-1/2 8 1/4 7.475 .045 .275 .006 1.4461 189,87 1,14 6,99 0,15 2-443
2-444 -444 7-3/4 8-1/4 1/4 7.725 .045 .275 .006 1.4928 196,22 1,14 6,99 0,15 2-444
2-445 -445 8 8-1/2 1/4 7.975 .045 .275 .006 1.5394 202,57 1,14 6,99 0,15 2-445
2-446 -446 8-1/2 9 1/4 8.475 .055 .275 .006 1.6327 215,27 1,40 6,99 0,15 2-446
(a) The rubber compound must be added when ordering by the 2-size number (i.e., N0674-70 2-007).
(b) This chart provides dimensions for standard (AN) shrinkage materials ONLY. These correspond to AS568A dimensions.
O-rings manufactured out of compounds with different shrinkage rates (other than AN) will produce slightly different dimensions
and tolerances. For more information on shrinkage rates, see the Appendix.
(c) When ordering O-rings to a Military, AMS or NAS material Specifi cation, see Section VIII, Specifi cations, for more information.
Table 9-1: Parker Series 2-XXX O-Ring Sizes
.210 Area = .034636
.275 Area = .059396
(sq. in.)