568 BUNA-N BN90

Seal Information (568 BUNA-N BN90)
MATERIAL :BUNA-N RUBBER
TEMPERATURE RANGE :-70°F (-57°C) TO +250°F (121°C) Depending on compound
PRESSURE RANGE :Varies based on Diametrical Clearance (See Chart)
PART NUMBER :(568) – (Dash No.)(BN90)
Chemical Compatibility :– Water
– Aliphatic Hydrocarbons (petroleum oils, mineral oil, mineral grease, diesel fuel, fuel oils, propane) vegetable oils
– Dilute acids, alkali & salt solutions
– HFB, HFA & HFC Fluids
Buna-N, also known as Nitrile rubber, NBR, and acrylonitrile butadiene rubber, is a synthetic rubber copolymer of acrylonitrile (ACN) and butadiene. One of the most commonly used compounds in Hydraulics and Pneumatics.
A Nom ID
0.031″
132
0.046″
364
0.062″
116
0.078″
564
0.093″
332
0.125″
18
0.156″
532
0.187″
316
0.218″
732
0.25″
14
0.312″
516
0.375″
38
0.437″
716
0.5″
12
0.562″
916
0.625″
58
0.687″
1116
0.75″
34
0.812″
1316
0.875″
78
0.937″
1516
1″
1.062″
1116
1.125″
118
1.187″
1316
1.25″
114
1.312″
1516
1.375″
138
1.437″
1716
1.5″
112
1.562″
1916
1.625″
158
1.687″
11116
1.75″
134
1.812″
11316
1.875″
178
1.937″
11516
2″
2.062″
2116
2.125″
218
2.187″
2316
2.25″
214
2.312″
2516
2.375″
238
2.437″
2716
2.5″
212
2.562″
2916
2.625″
258
2.687″
21116
2.75″
234
2.812″
21316
2.875″
278
3″
3.125″
318
3.25″
314
3.375″
338
3.5″
312
3.625″
358
3.75″
334
3.875″
378
4″
4.125″
418
4.25″
414
4.375″
438
4.5″
412
4.625″
458
4.75″
434
4.875″
478
5″
5.125″
518
5.25″
514
5.375″
538
5.5″
512
5.625″
558
5.75″
534
5.875″
578
6″
6.25″
614
6.5″
612
6.75″
634
7″
7.25″
714
7.5″
712
7.75″
734
8″
8.25″
814
8.5″
812
8.75″
834
9″
9.25″
914
9.5″
912
9.75″
934
10″
10 
10.5″
1012
11″
11 
11.5″
1112
12″
12 
12.5″
1212
13″
13 
13.5″
1312
14″
14 
14.5″
1412
15″
15 
15.5″
1512
16″
16 
16.5″
1612
17″
17 
17.5″
1712
18″
18 
18.5″
1812
19″
19 
19.5″
1912
20″
20 
21″
21 
22″
22 
23″
23 
24″
24 
25″
25 
26″
26 
B Nom OD
0.093″
332
0.140″
964
0.187″
316
0.203″
1364
0.218″
732
0.25″
14
0.281″
932
0.312″
516
0.343″
1132
0.375″
38
0.406″
1332
0.437″
716
0.5″
12
0.562″
916
0.625″
58
0.687″
1116
0.75″
34
0.812″
1316
0.875″
78
0.937″
1516
1″
1.062″
1116
1.125″
118
1.187″
1316
1.25″
114
1.312″
1516
1.375″
138
1.437″
1716
1.5″
112
1.562″
1916
1.625″
158
1.687″
11116
1.75″
134
1.812″
11316
1.875″
178
1.937″
11516
2″
2.062″
2116
2.125″
218
2.187″
2316
2.25″
214
2.312″
2516
2.375″
238
2.437″
2716
2.5″
212
2.562″
2916
2.625″
258
2.687″
21116
2.75″
234
2.812″
21316
2.875″
278
2.937″
21516
3″
3.062″
3116
3.125″
318
3.187″
3316
3.25″
314
3.375″
338
3.437″
3716
3.5″
312
3.625″
358
3.687″
31116
3.75″
334
3.875″
378
3.937″
31516
4″
4.125″
418
4.187″
4316
4.25″
414
4.375″
438
4.437″
4716
4.5″
412
4.625″
458
4.687″
41116
4.75″
434
4.875″
478
4.937″
41516
5″
5.125″
518
5.187″
5316
5.25″
514
5.375″
538
5.437″
5716
5.5″
512
5.625″
558
5.687″
51116
5.75″
534
5.875″
578
5.937″
51516
6″
6.125″
618
6.187″
6316
6.25″
614
6.375″
638
6.437″
6716
6.5″
612
6.625″
658
6.687″
61116
6.75″
634
6.875″
678
6.937″
61516
7″
7.125″
718
7.187″
7316
7.25″
714
7.375″
738
7.437″
7716
7.5″
712
7.625″
758
7.687″
71116
7.75″
734
7.875″
778
7.937″
71516
8″
8.125″
818
8.187″
8316
8.25″
814
8.375″
838
8.437″
8716
8.5″
812
8.625″
858
8.687″
81116
8.75″
834
8.875″
878
8.937″
81516
9″
9.125″
918
9.187″
9316
9.25″
914
9.375″
938
9.437″
9716
9.5″
912
9.625″
958
9.687″
91116
9.75″
934
9.875″
978
9.937″
91516
10″
10 
10.12″
10.12 
10.25″
1014
10.37″
1038
10.5″
1012
10.75″
1034
10.87″
1078
11″
11 
11.25″
1114
11.37″
1138
11.5″
1112
11.75″
1134
11.87″
1178
12″
12 
12.25″
1214
12.37″
1238
12.5″
1212
13″
13 
13.25″
1314
13.37″
1338
13.5″
1312
14″
14 
14.25″
1414
14.37″
1438
14.5″
1412
15″
15 
15.25″
1514
15.37″
1538
15.5″
1512
16″
16 
16.25″
1614
16.37″
1638
16.5″
1612
17″
17 
17.25″
1714
17.37″
1738
17.5″
1712
18″
18 
18.25″
1814
18.37″
1838
18.5″
1812
19″
19 
19.37″
1938
19.5″
1912
20″
20 
20.37″
2038
20.5″
2012
21.37″
2138
21.5″
2112
22.37″
2238
22.5″
2212
23.37″
2338
23.5″
2312
24.37″
2438
24.5″
2412
25.37″
2538
25.5″
2512
26.37″
2638
26.5″
2612
C Nom Hgt
0.031″
132
0.046″
364
0.062″
116
0.093″
332
0.125″
18
0.187″
316
0.25″
14
Clear Filters
ProductCross SectionA Nom IDB Nom ODC Nom HgtAvailability
568-001 BN90 [50] 132
0.040
132
0.031″
332
0.093″
0.040″
132
STOCK
568-002 BN90 [50] 364
0.050
364
0.046″
964
0.140″
0.050″
364
STOCK
568-003 BN90 [50] 116
0.060
116
0.062″
316
0.187″
0.060″
116
STOCK
568-004 BN90 [50] 116
0.070
564
0.078″
1364
0.203″
0.070″
116
STOCK
568-005 BN90 [50] 116
0.070
332
0.093″
732
0.218″
0.070″
116
STOCK
568-006 BN90 [50] 116
0.070
18
0.125″
14
0.25″
0.070″
116
STOCK
568-007 BN90 [50] 116
0.070
532
0.156″
932
0.281″
0.070″
116
STOCK
568-008 BN90 [50] 116
0.070
316
0.187″
516
0.312″
0.070″
116
STOCK
568-009 BN90 [50] 116
0.070
732
0.218″
1132
0.343″
0.070″
116
STOCK
568-010 BN90 [50] 116
0.070
14
0.25″
38
0.375″
0.070″
116
STOCK
* This is an estimated delivery time, all delivery times may vary depending on factory lead times. A confirming sales order will be sent to you with updated delivery information when necessary.
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