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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...
468
$0.09

Add:
Min Qty:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$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...
5
$0.09

Add:
Min Qty:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$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...
264
$0.09

Add:
Min Qty:  6
Quantity Discounts
6-518$0.09
519-3,333$0.07
3,334+$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...
628
$0.10

Add:
Min Qty:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$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...
6263
$0.10

Add:
Min Qty:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$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...
2371
$0.10

Add:
Min Qty:  5
Quantity Discounts
5-466$0.10
467-2,999$0.08
3,000+$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...
431
$0.11

Add:
Min Qty:  5
Quantity Discounts
5-424$0.11
425-2,727$0.08
2,728+$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...
6
$0.11

Add:
Min Qty:  5
Quantity Discounts
5-424$0.11
425-2,727$0.08
2,728+$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...
204
$0.13

Add:
Min Qty:  4
Quantity Discounts
4-358$0.13
359-2,307$0.10
2,308+$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...
179
$0.13

Add:
Min Qty:  4
Quantity Discounts
4-358$0.13
359-2,307$0.10
2,308+$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...
16719
$0.14

Add:
Min Qty:  4
Quantity Discounts
4-333$0.14
334-2,142$0.11
2,143+$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...
1168
$0.14

Add:
Min Qty:  4
Quantity Discounts
4-333$0.14
334-2,142$0.11
2,143+$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...
4524
$0.15

Add:
Min Qty:  4
Quantity Discounts
4-311$0.15
312-1,999$0.11
2,000+$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...
2333
$0.15

Add:
Min Qty:  4
Quantity Discounts
4-311$0.15
312-1,999$0.11
2,000+$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...
289
$0.16

Add:
Min Qty:  4
Quantity Discounts
4-291$0.16
292-1,874$0.12
1,875+$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...
-5
$0.17

Add:
Min Qty:  3
Quantity Discounts
3-274$0.17
275-1,764$0.13
1,765+$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...
145
$0.17

Add:
Min Qty:  3
Quantity Discounts
3-274$0.17
275-1,764$0.13
1,765+$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...
9
$0.19

Add:
Min Qty:  3
Quantity Discounts
3-245$0.19
246-1,578$0.14
1,579+$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...
12
$0.20

Add:
Min Qty:  3
Quantity Discounts
3-233$0.20
234-1,499$0.15
1,500+$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...
3949
$0.20

Add:
Min Qty:  3
Quantity Discounts
3-233$0.20
234-1,499$0.15
1,500+$0.10