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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...
317
$0.09

Add:
Min Qty:  6
Quantity Discounts
6-518$0.09
519-3,333$0.072
3,334+$0.054
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...
13,945
$0.09

Add:
Min Qty:  6
Quantity Discounts
6-518$0.09
519-3,333$0.072
3,334+$0.054
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...
2,024
$0.09

Add:
Min Qty:  6
Quantity Discounts
6-518$0.09
519-3,333$0.072
3,334+$0.054
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...
0
$0.10

Add:
Min Qty:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.06
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...
5,350
$0.10

Add:
Min Qty:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.06
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...
2,125
$0.10

Add:
Min Qty:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$0.06
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...
26
$0.11

Add:
Min Qty:  5
Quantity Discounts
5-424$0.11
425-2,727$0.088
2,728+$0.066
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...
383
$0.11

Add:
Min Qty:  5
Quantity Discounts
5-424$0.11
425-2,727$0.088
2,728+$0.066
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...
56
$0.13

Add:
Min Qty:  4
Quantity Discounts
4-358$0.13
359-2,307$0.104
2,308+$0.078
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...
31
$0.13

Add:
Min Qty:  4
Quantity Discounts
4-358$0.13
359-2,307$0.104
2,308+$0.078
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...
16,041
$1.14

Add:
Min Qty:  8
Quantity Discounts
8-54$1.14
55-365$0.912
366+$0.684
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...
965
$0.14

Add:
Min Qty:  4
Quantity Discounts
4-333$0.14
334-2,142$0.112
2,143+$0.084
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...
3,449
$0.15

Add:
Min Qty:  4
Quantity Discounts
4-311$0.15
312-1,999$0.12
2,000+$0.09
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...
2,308
$0.15

Add:
Min Qty:  4
Quantity Discounts
4-311$0.15
312-1,999$0.12
2,000+$0.09
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...
465
$0.16

Add:
Min Qty:  4
Quantity Discounts
4-291$0.16
292-1,874$0.128
1,875+$0.096
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...
156
$0.17

Add:
Min Qty:  3
Quantity Discounts
3-274$0.17
275-1,764$0.136
1,765+$0.102
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...
145
$0.17

Add:
Min Qty:  3
Quantity Discounts
3-274$0.17
275-1,764$0.136
1,765+$0.102
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...
184
$0.19

Add:
Min Qty:  3
Quantity Discounts
3-245$0.19
246-1,578$0.152
1,579+$0.114
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...
182
$0.20

Add:
Min Qty:  3
Quantity Discounts
3-233$0.20
234-1,499$0.16
1,500+$0.12
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...
10,058
$0.20

Add:
Min Qty:  3
Quantity Discounts
3-233$0.20
234-1,499$0.16
1,500+$0.12
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...
4,514
$0.14

Add:
Min Qty:  5
Quantity Discounts
5-446$0.14
447-2,976$0.112
2,977+$0.084
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
$0.21

Add:
Min Qty:  3
Quantity Discounts
3-222$0.21
223-1,428$0.168
1,429+$0.126
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...
191
$0.21

Add:
Min Qty:  3
Quantity Discounts
3-222$0.21
223-1,428$0.168
1,429+$0.126
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...
724
$0.22

Add:
Min Qty:  3
Quantity Discounts
3-212$0.22
213-1,363$0.176
1,364+$0.132
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...
2,531
$0.17

Add:
Min Qty:  3
Quantity Discounts
3-274$0.17
275-1,764$0.136
1,765+$0.102