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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 Buna-N 70 Metric O-rings N4.00X005

4mm x 5mm Buna-N 70 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...
599
$0.09

Add:
Min:  6
Quantity Discounts
6-357$0.09
358-1,999$0.07
2,000+$0.05
4mm x 6mm Buna-N 70 Metric O-rings N4.00X006

4mm x 6mm Buna-N 70 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...
6843
$0.09

Add:
Min:  6
Quantity Discounts
6-357$0.09
358-1,999$0.07
2,000+$0.05
4mm x 7mm Buna-N 70 Metric O-rings N4.00X007

4mm x 7mm Buna-N 70 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...
408
$0.09

Add:
Min:  6
Quantity Discounts
6-357$0.09
358-1,999$0.07
2,000+$0.05
4mm x 8mm Buna-N 70 Metric O-rings N4.00X008

4mm x 8mm Buna-N 70 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...
812
$0.10

Add:
Min:  5
Quantity Discounts
5-312$0.10
313-1,999$0.08
2,000+$0.05
4mm x 9mm Buna-N 70 Metric O-rings N4.00X009

4mm x 9mm Buna-N 70 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...
7257
$0.10

Add:
Min:  5
Quantity Discounts
5-312$0.10
313-1,999$0.08
2,000+$0.05
4mm x 10mm Buna-N 70 Metric O-rings N4.00X010

4mm x 10mm Buna-N 70 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...
185
$0.10

Add:
Min:  5
Quantity Discounts
5-312$0.10
313-1,999$0.08
2,000+$0.05
4mm x 11mm Buna-N 70 Metric O-rings N4.00X011

4mm x 11mm Buna-N 70 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...
478
$0.11

Add:
Min:  5
Quantity Discounts
5-312$0.11
313-1,666$0.08
1,667+$0.06
4mm x 12mm Buna-N 70 Metric O-rings N4.00X012

4mm x 12mm Buna-N 70 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...
242
$0.11

Add:
Min:  5
Quantity Discounts
5-312$0.11
313-1,666$0.08
1,667+$0.06
4mm x 13mm Buna-N 70 Metric O-rings N4.00X013

4mm x 13mm Buna-N 70 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...
244
$0.13

Add:
Min:  4
Quantity Discounts
4-249$0.13
250-14,228$0.10
14,229+$0.07
4mm x 14mm Buna-N 70 Metric O-rings N4.00X014

4mm x 14mm Buna-N 70 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...
243
$0.13

Add:
Min:  4
Quantity Discounts
4-249$0.13
250-1,428$0.10
1,429+$0.07
4mm x 14.5mm Buna-N 70 Metric O-rings (JIS V15) N4.00X014.5

4mm x 14.5mm Buna-N 70 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...
6
$0.14

Add:
Min:  4
Quantity Discounts
4-227$0.14
228-1,428$0.11
1,429+$0.07
4mm x 15mm Buna-N 70 Metric O-rings N4.00X015

4mm x 15mm Buna-N 70 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...
3098
$0.14

Add:
Min:  4
Quantity Discounts
4-227$0.14
228-1,428$0.11
1,429+$0.07
4mm x 16mm Buna-N 70 Metric O-rings N4.00X016

4mm x 16mm Buna-N 70 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...
5107
$0.15

Add:
Min:  4
Quantity Discounts
4-227$0.15
228-1,249$0.11
1,250+$0.08
4mm x 17mm Buna-N 70 Metric O-rings N4.00X017

4mm x 17mm Buna-N 70 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...
4654
$0.15

Add:
Min:  4
Quantity Discounts
4-227$0.15
228-1,249$0.11
1,250+$0.08
4mm x 18mm Buna-N 70 Metric O-rings N4.00X018

4mm x 18mm Buna-N 70 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...
628
$0.16

Add:
Min:  4
Quantity Discounts
4-208$0.16
209-1,249$0.12
1,250+$0.08
4mm x 19mm Buna-N 70 Metric O-rings N4.00X019

4mm x 19mm Buna-N 70 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...
116
$0.17

Add:
Min:  3
Quantity Discounts
3-192$0.17
193-1,111$0.13
1,112+$0.09
4mm x 20mm Buna-N 70 Metric O-rings N4.00X020

4mm x 20mm Buna-N 70 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...
747
$0.17

Add:
Min:  3
Quantity Discounts
3-192$0.17
193-1,111$0.13
1,112+$0.09
4mm x 21mm Buna-N 70 Metric O-rings N4.00X021

4mm x 21mm Buna-N 70 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...
169
$0.19

Add:
Min:  3
Quantity Discounts
3-178$0.19
179-999$0.14
1,000+$0.10
4mm x 22mm Buna-N 70 Metric O-rings N4.00X022

4mm x 22mm Buna-N 70 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...
108
$0.20

Add:
Min:  3
Quantity Discounts
3-166$0.20
167-999$0.15
1,000+$0.10
4mm x 23mm Buna-N 70 Metric O-rings N4.00X023

4mm x 23mm Buna-N 70 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...
153
$0.20

Add:
Min:  3
Quantity Discounts
3-166$0.20
167-999$0.15
1,000+$0.10