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O-Rings

1.78mm CS

Buna-N / Nitrile Metric O-Rings 70 Duro (NBR):

A general purpose, sulfur-cured Buna-N Nitrile O-Ring, the most commonly used elastomer for sealing products. Nitrile, also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. More than 50% of the Orings sold are Buna-N Nitrile Orings, commonly used in hydraulic/pneumatic motors, cylinders, pumps and valves.

O-Ring Dimensions are defined by the cross section (CS) and the inside diameter (ID).

Size not listed, special requirements or large quantities please click this link to Request a Price Quote.




Image Model+ Item Name Qty. Price Quantity Discounts
1.78mm X 1.78mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X001.78

1.78mm X 1.78mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 50,192
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 2.57mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X002.57

1.78mm X 2.57mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 221,278
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 2.9mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X002.9

1.78mm X 2.9mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 32,104
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 3.17mm (NBR) Buna-N 70 Duro Metric O-Ring BS801 N1.78X003.17

1.78mm X 3.17mm (NBR) Buna-N 70 Duro Metric O-Ring BS801

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 918
$0.12

Add:
Min Qty:  9
Quantity Discounts
9-388$0.12
389-2,499$0.096
2,500+$0.072
1.78mm X 3.2mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X003.2

1.78mm X 3.2mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 11,984
$0.09

Add:
Min Qty:  12
Quantity Discounts
12-518$0.09
519-3,333$0.072
3,334+$0.054
1.78mm X 3.68mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X003.68

1.78mm X 3.68mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 46,714
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 4.47mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X004.47

1.78mm X 4.47mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 19,091
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 4.76mm (NBR) Buna-N 70 Duro Metric O-Ring BS802 N1.78X004.76

1.78mm X 4.76mm (NBR) Buna-N 70 Duro Metric O-Ring BS802

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 2,203
$0.09

Add:
Min Qty:  12
Quantity Discounts
12-518$0.09
519-3,333$0.072
3,334+$0.054
1.78mm X 5.28mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X005.28

1.78mm X 5.28mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 46,438
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 6.07mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X006.07

1.78mm X 6.07mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 45,698
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 6.35mm (NBR) Buna-N 70 Duro Metric O-Ring BS803 N1.78X006.35

1.78mm X 6.35mm (NBR) Buna-N 70 Duro Metric O-Ring BS803

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 1,274
$0.14

Add:
Min Qty:  8
Quantity Discounts
8-333$0.14
334-2,142$0.112
2,143+$0.084
1.78mm X 6.75mm (NBR) Buna-N 70 Duro Metric O-Ring BS610 N1.78X006.75

1.78mm X 6.75mm (NBR) Buna-N 70 Duro Metric O-Ring BS610

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 20,062
$0.14

Add:
Min Qty:  8
Quantity Discounts
8-333$0.14
334-2,142$0.112
2,143+$0.084
1.78mm X 7.65mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X007.65

1.78mm X 7.65mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 68,564
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 7.94mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X007.94

1.78mm X 7.94mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 523
$0.20

Add:
Min Qty:  5
Quantity Discounts
5-233$0.20
234-1,499$0.16
1,500+$0.12
1.78mm X 8.73mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X008.73

1.78mm X 8.73mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 2,389
$0.16

Add:
Min Qty:  7
Quantity Discounts
7-291$0.16
292-1,874$0.128
1,875+$0.096
1.78mm X 9.25mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X009.25

1.78mm X 9.25mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 109,504
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
N1.78X009.52 (NBR) Buna-N 70 Duro Metric O-Ring N1.78X009.52

N1.78X009.52 (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 4,986
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-274$0.17
275-1,764$0.136
1,765+$0.102
1.78mm X 10.82mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X010.82

1.78mm X 10.82mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 90,164
$0.03

Add:
Min Qty:  34
Quantity Discounts
34-1,555$0.03
1,556-9,999$0.024
10,000+$0.018
1.78mm X 11.11mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X011.11

1.78mm X 11.11mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 623
$0.18

Add:
Min Qty:  6
Quantity Discounts
6-259$0.18
260-1,666$0.144
1,667+$0.108
1.78mm X 11.91mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X011.91

1.78mm X 11.91mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 49
$0.39

Add:
Min Qty:  3
Quantity Discounts
3-119$0.39
120-769$0.312
770+$0.234
1.78mm X 12.42mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X012.42

1.78mm X 12.42mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 67,544
$0.04

Add:
Min Qty:  25
Quantity Discounts
25-1,166$0.04
1,167-7,499$0.032
7,500+$0.024
1.78mm X 14mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X014

1.78mm X 14mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 47,988
$0.04

Add:
Min Qty:  25
Quantity Discounts
25-1,166$0.04
1,167-7,499$0.032
7,500+$0.024
1.78mm X 15.6mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X015.6

1.78mm X 15.6mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 0
$0.04

Add:
Min Qty:  25
Quantity Discounts
25-1,166$0.04
1,167-7,499$0.032
7,500+$0.024
1.78mm X 17.17mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X017.17

1.78mm X 17.17mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 112,412
$0.04

Add:
Min Qty:  25
Quantity Discounts
25-1,166$0.04
1,167-7,499$0.032
7,500+$0.024
1.78mm X 18.77mm (NBR) Buna-N 70 Duro Metric O-Ring N1.78X018.77

1.78mm X 18.77mm (NBR) Buna-N 70 Duro Metric O-Ring

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
 56,986
$0.04

Add:
Min Qty:  25
Quantity Discounts
25-1,166$0.04
1,167-7,499$0.032
7,500+$0.024