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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...
170
$0.15

Add:
Min Qty:  7
Quantity Discounts
7-291$0.15
292-952$0.12
953+$0.105
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...
7,624
$0.15

Add:
Min Qty:  7
Quantity Discounts
7-291$0.15
292-952$0.12
953+$0.105
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...
1,530
$0.15

Add:
Min Qty:  7
Quantity Discounts
7-291$0.15
292-952$0.12
953+$0.105
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...
49,920
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-257$0.17
258-840$0.136
841+$0.119
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...
9,409
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-257$0.17
258-840$0.136
841+$0.119
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...
1,897
$0.17

Add:
Min Qty:  6
Quantity Discounts
6-257$0.17
258-840$0.136
841+$0.119
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...
4,761
$0.18

Add:
Min Qty:  6
Quantity Discounts
6-243$0.18
244-793$0.144
794+$0.126
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...
635
$0.18

Add:
Min Qty:  6
Quantity Discounts
6-243$0.18
244-793$0.144
794+$0.126
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...
2,882
$0.22

Add:
Min Qty:  5
Quantity Discounts
5-194$0.22
195-624$0.18
625+$0.16
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...
1,519
$0.22

Add:
Min Qty:  5
Quantity Discounts
5-1,949$0.22
1,950-3,749$0.18
3,750+$0.16
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...
15,423
$1.79

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Quantity Discounts
1-24$1.79
25-79$1.44
80+$1.26
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...
1,504
$0.23

Add:
Min Qty:  5
Quantity Discounts
5-184$0.23
185-588$0.19
589+$0.17
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...
761
$0.24

Add:
Min Qty:  5
Quantity Discounts
5-174$0.24
175-588$0.20
589+$0.17
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...
3,097
$0.24

Add:
Min Qty:  5
Quantity Discounts
5-174$0.24
175-588$0.20
589+$0.17
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...
199
$0.25

Add:
Min Qty:  4
Quantity Discounts
4-174$0.25
175-555$0.20
556+$0.18
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...
582
$0.28

Add:
Min Qty:  4
Quantity Discounts
4-1,526$0.28
1,527-2,999$0.23
3,000+$0.20
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...
0
$0.28

Add:
Min Qty:  4
Quantity Discounts
4-1,526$0.28
1,527-2,999$0.23
3,000+$0.20
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...
4,973
$0.30

Add:
Min Qty:  4
Quantity Discounts
4-145$0.30
146-476$0.24
477+$0.21
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...
11,091
$0.32

Add:
Min Qty:  4
Quantity Discounts
4-134$0.32
135-434$0.26
435+$0.23
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...
48
$0.32

Add:
Min Qty:  4
Quantity Discounts
4-134$0.32
135-434$0.26
435+$0.23
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...
3,982
$0.23

Add:
Min Qty:  5
Quantity Discounts
5-184$0.23
185-588$0.19
589+$0.17
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...
5,000
$0.34

Add:
Min Qty:  3
Quantity Discounts
3-124$0.34
125-416$0.28
417+$0.24
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...
82
$0.34

Add:
Min Qty:  3
Quantity Discounts
3-1,253$0.34
1,254-2,499$0.28
2,500+$0.24
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...
480
$0.35

Add:
Min Qty:  3
Quantity Discounts
3-124$0.35
125-399$0.28
400+$0.25
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...
2,036
$0.28

Add:
Min Qty:  4
Quantity Discounts
4-152$0.28
153-499$0.23
500+$0.20