568 BUNA-N BN70

568 BUNA-N BN70
Seal Information
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.)(BN70)
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.
Cross Section
0.040″
132
0.050″
364
0.060″
116
0.070″
116
0.103″
332
0.139″
18
0.210″
316
0.275″
14
A Nom ID
1″
1/16″
116
0.070″
116
1/16″
116
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
0.040″
132
1/4″
14
0.275″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/8″
18
0.139″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
10″
10 
11″
11 
11/16″
1116
11/16″
1116
11/16″
1116
12″
12 
13″
13 
13/16″
1316
13/16″
1316
13/16″
1316
2″
4″
5″
6″
7″
8″
9″
14″
14 
15″
15 
15/16″
1516
15/16″
1516
3″
16″
16 
17″
17 
18″
18 
19″
19 
20″
20 
21″
21 
22″
22 
23″
23 
24″
24 
25″
25 
26″
26 
3/16″
316
3/16″
316
0.210″
316
0.103″
332
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
0.050″
364
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
5/16″
516
5/16″
516
5/16″
516
5/32″
532
5/64″
564
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
7/16″
716
7/16″
716
7/16″
716
7/32″
732
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
9/16″
916
9/16″
916
9/16″
916
B Nom OD
1″
1/16″
116
1/16″
116
1/16″
116
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/2″
12
1/4″
14
0.275″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/4″
14
1/8″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
1/8″
18
10″
10 
11″
11 
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/16″
1116
11/32″
1132
2″
3″
12″
12 
13″
13 
13/16″
1316
13/16″
1316
13/16″
1316
13/32″
1332
13/64″
1364
14″
14 
15″
15 
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
15/16″
1516
16″
16 
17″
17 
18″
18 
19″
19 
20″
20 
3/16″
316
3/16″
316
3/16″
316
0.210″
316
3/16″
316
3/16″
316
3/16″
316
3/16″
316
3/16″
316
3/16″
316
0.103″
332
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/4″
34
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
3/8″
38
4″
5″
5/16″
516
5/16″
516
5/16″
516
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
5/8″
58
6″
7″
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/16″
716
7/32″
732
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
7/8″
78
8″
9″
9/16″
916
9/16″
916
9/16″
916
9/32″
932
9/64″
964
C Nom Hgt
0.040″
132
0.050″
364
0.060″
116
0.070″
116
0.103″
332
0.139″
18
0.210″
316
0.275″
14
Clear Filters
Product Cross SectionA Nom IDB Nom ODC Nom HgtAvailability
568‑001 BN70 [50] 132
0.040″
132
0.040″
332
0.103″
132
0.040″
STOCK
568‑002 BN70 [50] 364
0.050″
364
0.050″
964
9/64″
364
0.050″
STOCK
568‑003 BN70 [50] 116
0.060″
116
0.060″
316
116
0.060″
STOCK
568‑004 BN70 [50] 116
0.070″
564
5/64″
1364
13/64″
116
0.070″
STOCK
568‑005 BN70 [50] 116
0.070″
332
0.103″
732
7/32″
116
0.070″
STOCK
568‑006 BN70 [50] 116
0.070″
18
0.139″
14
0.275″
116
0.070″
STOCK
568‑007 BN70 [50] 116
0.070″
532
5/32″
932
9/32″
116
0.070″
STOCK
568‑008 BN70 [50] 116
0.070″
316
0.210″
516
5/16″
116
0.070″
STOCK
568‑009 BN70 [50] 116
0.070″
732
7/32″
1132
11/32″
116
0.070″
STOCK
568‑010 BN70 [50] 116
0.070″
14
0.275″
38
3/8″
116
0.070″
STOCK
568‑011 BN70 [50] 116
0.070″
516
5/16″
716
7/16″
116
0.070″
STOCK
568‑012 BN70 [50] 116
0.070″
38
3/8″
12
1/2″
116
0.070″
STOCK
568‑013 BN70 [50] 116
0.070″
716
7/16″
916
9/16″
116
0.070″
*1-3 Days
568‑014 BN70 [50] 116
0.070″
12
1/2″
58
5/8″
116
0.070″
STOCK
568‑015 BN70 [50] 116
0.070″
916
9/16″
1116
11/16″
116
0.070″
STOCK
568‑016 BN70 [50] 116
0.070″
58
5/8″
34
3/4″
116
0.070″
STOCK
568‑017 BN70 [50] 116
0.070″
1116
11/16″
1316
13/16″
116
0.070″
*1-3 Days
568‑018 BN70 [50] 116
0.070″
34
3/4″
78
7/8″
116
0.070″
*1-3 Days
568‑019 BN70 [50] 116
0.070″
1316
13/16″
1516
15/16″
116
0.070″
STOCK
568‑020 BN70 [50] 116
0.070″
78
7/8″
1″
116
0.070″
STOCK
568‑021 BN70 [50] 116
0.070″
1516
15/16″
1116
1/16″
116
0.070″
STOCK
568‑022 BN70 [50] 116
0.070″
1″
118
1/8″
116
0.070″
*1-3 Days
568‑023 BN70 [50] 116
0.070″
1116
1/16″
1316
3/16″
116
0.070″
STOCK
568‑024 BN70 [50] 116
0.070″
118
1/8″
114
1/4″
116
0.070″
STOCK
568‑025 BN70 [50] 116
0.070″
1316
3/16″
1516
5/16″
116
0.070″
*1-3 Days
* 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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