sas
Home > Products > O-Rings > .275" Cross Section

.275" Cross Section O-Rings (Nominal Size 1/4" Cross Section)

.070" Cross Section
.210" Cross Section
.103" Cross Section
.275" Cross Section
.139" Cross Section
All Other O-Rings
 
Actual Inches
Actual Millimeters
AS 568
Dash #
Inside
Diameter
Tol.
Cross
Section
Tol.
Inside
Diameter
Tol.
Cross
Section
Tol.
-425
4.475
.033
.275
.006
113.67
0.84
6.99
0.15
-426
4.600
.033
.275
.006
116.84
0.84
6.99
0.15
-427
4.725
.033
.275
.006
120.02
0.84
6.99
0.15
-428
4.850
.033
.275
.006
123.19
0.84
6.99
0.15
-429
4.975
.037
.275
.006
126.37
0.94
6.99
0.15
-430
5.100
.037
.275
.006
129.54
0.94
6.99
0.15
-431
5.225
.037
.275
.006
132.72
0.94
6.99
0.15
-432
5.350
.037
.275
.006
135.89
0.94
6.99
0.15
-433
5.475
.037
.275
.006
139.07
0.94
6.99
0.15
-434
5.600
.037
.275
.006
142.24
0.94
6.99
0.15
-435
5.725
.037
.275
.006
145.42
0.94
6.99
0.15
-436
5.850
.037
.275
.006
148.59
0.94
6.99
0.15
-437
5.975
.037
.275
.006
151.77
0.94
6.99
0.15
-438
6.225
.040
.275
.006
158.12
1.02
6.99
0.15
-439
6.475
.040
.275
.006
164.47
1.02
6.99
0.15
-440
6.725
.040
.275
.006
170.82
1.02
6.99
0.15
-441
6.975
.040
.275
.006
177.17
1.02
6.99
0.15
-442
7.225
.045
.275
.006
183.52
1.14
6.99
0.15
-443
7.475
.045
.275
.006
189.87
1.14
6.99
0.15
-444
7.725
.045
.275
.006
196.22
1.14
6.99
0.15
-445
7.975
.045
.275
.006
202.57
1.14
6.99
0.15
-446
8.475
.055
.275
.006
215.27
1.40
6.99
0.15
-447
8.975
.055
.275
.006
227.97
1.40
6.99
0.15
-448
9.475
.055
.275
.006
240.67
1.40
6.99
0.15
-449
9.975
.055
.275
.006
253.37
1.40
6.99
0.15
-450
10.475
.060
.275
.006
266.07
1.52
6.99
0.15
-451
10.975
.060
.275
.006
278.77
1.52
6.99
0.15
-452
11.475
.060
.275
.006
291.47
1.52
6.99
0.15
-453
11.975
.060
.275
.006
304.17
1.52
6.99
0.15
-454
12.475
.060
.275
.006
316.87
1.52
6.99
0.15
-455
12.975
.060
.275
.006
329.57
1.52
6.99
0.15
-456
13.475
.070
.275
.006
342.27
1.78
6.99
0.15
-457
13.975
.070
.275
.006
354.97
1.78
6.99
0.15
-458
14.475
.070
.275
.006
367.67
1.78
6.99
0.15
-459
14.975
.070
.275
.006
380.37
1.78
6.99
0.15
-460
15.475
.070
.275
.006
393.07
1.78
6.99
0.15
-461
15.955
.075
.275
.006
405.26
1.91
6.99
0.15
-462
16.455
.075
.275
.006
417.96
1.91
6.99
0.15
-463
16.955
.080
.275
.006
430.66
2.03
6.99
0.15
-464
17.455
.085
.275
.006
443.36
2.16
6.99
0.15
-465
17.955
.085
.275
.006
456.06
2.16
6.99
0.15
-466
18.455
.085
.275
.006
468.76
2.16
6.99
0.15
-467
18.955
.090
.275
.006
481.46
2.29
6.99
0.15
-468
19.455
.275
494.51
6.99
-469
19.955
.275
507.22
6.99
-470
20.955
.275
532.64
6.99
-471
21.955
.275
558.06
6.99
-472
22.940
.275
583.09
6.99
-473
23.940
.275
608.51
6.99
-474
24.940
.275
633.93
6.99
-475
25.940
.275
659.35
6.99
A full part number is generated by inserting the material identifier between AS568- and -*** with *** being the size of the O-Ring. Some examples of the many materials we can make any of these O-Rings in are:
Examples of Some Common Material Identifiers
NE50: Neoprene, 50 Durometer
NE70: Neoprene, 70 Durometer
NI60: Nitrile (Buna-N), 60 Durometer
EP60: EPDM, 60 Durometer
1056: Silver Plated Aluminum filled Silicone
1167: Silver Plated Copper filled Fluorosilicone
FS70: Fluorosilicone, 70 Durometer
SI70: Silicone, 70 Durometer
Examples of full part numbers are:

AS568-SI70-457 - This indicates a -457 size, as per the chart above, in a 70 Durometer Silicone

1056-0470 - This indicates a -470 size, as per the chart above, in a Silver Plated Aluminum filled Silicone (see EMI/RFI Shielding section for more information)
COPYRIGHT 1973-2016 SAS INDUSTRIES, INC. ALL RIGHTS RESERVED.