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O-Rings

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4.0mm 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
4mm x 5mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X005

4mm x 5mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
222
$0.09

Add:
Min Qty:  12
Quantity Discounts
12-148$0.09
149-2,222$0.068
2,223+$0.045
4mm x 6mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X006

4mm x 6mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
6,651
$0.09

Add:
Min Qty:  12
Quantity Discounts
12-148$0.09
149-2,222$0.068
2,223+$0.045
4mm x 7mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X007

4mm x 7mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
1,760
$0.09

Add:
Min Qty:  12
Quantity Discounts
12-148$0.09
149-2,222$0.068
2,223+$0.045
4mm x 8mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X008

4mm x 8mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
39
$0.10

Add:
Min Qty:  10
Quantity Discounts
10-133$0.10
134-1,999$0.075
2,000+$0.05
4mm x 9mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X009

4mm x 9mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
3,934
$0.10

Add:
Min Qty:  10
Quantity Discounts
10-133$0.10
134-1,999$0.075
2,000+$0.05
4mm x 10mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X010

4mm x 10mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
1,967
$0.10

Add:
Min Qty:  10
Quantity Discounts
10-133$0.10
134-1,999$0.075
2,000+$0.05
4mm x 11mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X011

4mm x 11mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
4,911
$0.11

Add:
Min Qty:  10
Quantity Discounts
10-121$0.11
122-1,818$0.083
1,819+$0.055
4mm x 12mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X012

4mm x 12mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
671
$0.11

Add:
Min Qty:  10
Quantity Discounts
10-121$0.11
122-1,818$0.083
1,819+$0.055
4mm x 13mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X013

4mm x 13mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
8
$0.13

Add:
Min Qty:  8
Quantity Discounts
8-102$0.13
103-1,538$0.098
1,539+$0.065
4mm x 14mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X014

4mm x 14mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
11
$0.13

Add:
Min Qty:  8
Quantity Discounts
8-102$0.13
103-1,538$0.098
1,539+$0.065
4mm x 14.5mm (NBR) Buna-N 70 Duro Metric O-Rings (JIS V15) N4.00X014.5

4mm x 14.5mm (NBR) Buna-N 70 Duro Metric O-Rings (JIS V15)

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
15,646
$1.14

Add:

Quantity Discounts
1-11$1.14
12-175$0.855
176+$0.57
4mm x 15mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X015

4mm x 15mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
306
$0.14

Add:
Min Qty:  8
Quantity Discounts
8-95$0.14
96-1,428$0.105
1,429+$0.07
4mm x 16mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X016

4mm x 16mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
1,585
$0.15

Add:
Min Qty:  7
Quantity Discounts
7-88$0.15
89-1,333$0.113
1,334+$0.075
4mm x 17mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X017

4mm x 17mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
759
$0.15

Add:
Min Qty:  7
Quantity Discounts
7-88$0.15
89-1,333$0.113
1,334+$0.075
4mm x 18mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X018

4mm x 18mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
307
$0.16

Add:
Min Qty:  7
Quantity Discounts
7-83$0.16
84-1,249$0.12
1,250+$0.08
4mm x 19mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X019

4mm x 19mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
89
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-78$0.17
79-1,176$0.128
1,177+$0.085
4mm x 20mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X020

4mm x 20mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
5,286
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-78$0.17
79-1,176$0.128
1,177+$0.085
4mm x 21mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X021

4mm x 21mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
4,991
$0.19

Add:
Min Qty:  6
Quantity Discounts
6-70$0.19
71-1,052$0.143
1,053+$0.095
4mm x 22mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X022

4mm x 22mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
11,156
$0.20

Add:
Min Qty:  5
Quantity Discounts
5-66$0.20
67-999$0.15
1,000+$0.10
4mm x 23mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X023

4mm x 23mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
10,035
$0.20

Add:
Min Qty:  5
Quantity Discounts
5-66$0.20
67-999$0.15
1,000+$0.10
4mm x 23.5mm (NBR) Buna-N 70 Duro Metric O-Rings (JIS V24) N4.00X023.5

4mm x 23.5mm (NBR) Buna-N 70 Duro Metric O-Rings (JIS V24)

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
4,172
$0.14

Add:
Min Qty:  8
Quantity Discounts
8-95$0.14
96-1,428$0.105
1,429+$0.07
4mm x 24mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X024

4mm x 24mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
3,540
$0.21

Add:
Min Qty:  5
Quantity Discounts
5-63$0.21
64-952$0.158
953+$0.105
4mm x 25mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X025

4mm x 25mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
146
$0.21

Add:
Min Qty:  5
Quantity Discounts
5-63$0.21
64-952$0.158
953+$0.105
4mm x 26mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X026

4mm x 26mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
490
$0.22

Add:
Min Qty:  5
Quantity Discounts
5-60$0.22
61-909$0.165
910+$0.11
4mm x 27mm (NBR) Buna-N 70 Duro Metric O-Rings N4.00X027

4mm x 27mm (NBR) Buna-N 70 Duro Metric O-Rings

Cross Section "CS" X Inside Diameter "ID" Metric O-Rings Buna-N 70 Duro (NBR): The most commonly used elastomer for sealing...
2,268
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-78$0.17
79-1,176$0.128
1,177+$0.085




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