3.50mm 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.

Displaying 1 to 25 (of 206 Products)
Product Image Model Product Name Qty. Price Quantity Discounts
(image for) 3.5mm X 5mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X005
3.5mm X 5mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 337
$0.070
Add:
Min Qty:  43
Quantity Discounts
43-660$0.070
661-26,299$0.053
26,300-80,599$0.038
80,600+$0.031
(image for) 3.5mm X 6mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X006
3.5mm X 6mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 2750
$0.070
Add:
Min Qty:  43
Quantity Discounts
43-660$0.070
661-26,299$0.053
26,300-80,599$0.038
80,600+$0.031
(image for) 3.5mm X 7mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X007
3.5mm X 7mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 2329
$0.080
Add:
Min Qty:  38
Quantity Discounts
38-583$0.080
584-23,799$0.060
23,800-73,499$0.042
73,500+$0.034
(image for) 3.5mm X 8mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X008
3.5mm X 8mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 3333
$0.080
Add:
Min Qty:  38
Quantity Discounts
38-583$0.080
584-23,799$0.060
23,800-73,499$0.042
73,500+$0.034
(image for) 3.5mm X 9mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X009
3.5mm X 9mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 7568
$0.080
Add:
Min Qty:  38
Quantity Discounts
38-583$0.080
584-23,799$0.060
23,800-73,499$0.042
73,500+$0.034
(image for) 3.5mm X 10mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X010
3.5mm X 10mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 378
$0.080
Add:
Min Qty:  38
Quantity Discounts
38-583$0.080
584-23,799$0.060
23,800-73,499$0.042
73,500+$0.034
(image for) 3.5mm X 11mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X011
3.5mm X 11mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 25
$0.080
Add:
Min Qty:  38
Quantity Discounts
38-583$0.080
584-23,799$0.060
23,800-73,499$0.042
73,500+$0.034
(image for) 3.5mm X 12mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X012
3.5mm X 12mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 80
$0.090
Add:
Min Qty:  34
Quantity Discounts
34-514$0.090
515-20,799$0.068
20,800-64,099$0.048
64,100+$0.039
(image for) 3.5mm X 13mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X013
3.5mm X 13mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 928
$0.090
Add:
Min Qty:  34
Quantity Discounts
34-514$0.090
515-20,799$0.068
20,800-64,099$0.048
64,100+$0.039
(image for) 3.5mm X 14mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X014
3.5mm X 14mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 37
$0.100
Add:
Min Qty:  30
Quantity Discounts
30-466$0.100
467-18,899$0.075
18,900-58,099$0.053
58,100+$0.043
(image for) 3.5mm X 15mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X015
3.5mm X 15mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 398
$0.100
Add:
Min Qty:  30
Quantity Discounts
30-466$0.100
467-18,899$0.075
18,900-58,099$0.053
58,100+$0.043
(image for) 3.5mm X 16mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X016
3.5mm X 16mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 1180
$0.120
Add:
Min Qty:  25
Quantity Discounts
25-388$0.120
389-15,899$0.090
15,900-48,999$0.063
49,000+$0.051
(image for) 3.5mm X 17mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X017
3.5mm X 17mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 2095
$0.120
Add:
Min Qty:  25
Quantity Discounts
25-388$0.120
389-15,899$0.090
15,900-48,999$0.063
49,000+$0.051
(image for) 3.5mm X 18mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X018
3.5mm X 18mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 202
$0.120
Add:
Min Qty:  25
Quantity Discounts
25-388$0.120
389-15,899$0.090
15,900-48,999$0.063
49,000+$0.051
(image for) 3.5mm X 19mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X019
3.5mm X 19mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 2042
$0.130
Add:
Min Qty:  24
Quantity Discounts
24-357$0.130
358-14,499$0.098
14,500-44,599$0.069
44,600+$0.056
(image for) 3.5mm X 20mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X020
3.5mm X 20mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 193
$0.130
Add:
Min Qty:  24
Quantity Discounts
24-357$0.130
358-14,499$0.098
14,500-44,599$0.069
44,600+$0.056
(image for) 3.5mm X 21mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X021
3.5mm X 21mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 637
$0.140
Add:
Min Qty:  22
Quantity Discounts
22-333$0.140
334-13,499$0.105
13,500-41,699$0.074
41,700+$0.060
(image for) 3.5mm X 21.7mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P22A) N3.50X021.7
3.5mm X 21.7mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P22A)
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 1634
$0.180
Add:
Min Qty:  17
Quantity Discounts
17-259$0.180
260-10,499$0.135
10,500-32,899$0.095
32,900+$0.076
(image for) 3.5mm X 22mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X022
3.5mm X 22mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 14305
$0.140
Add:
Min Qty:  22
Quantity Discounts
22-333$0.140
334-13,499$0.105
13,500-41,699$0.074
41,700+$0.060
(image for) 3.5mm X 22.1mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P22.4) N3.50X022.1
3.5mm X 22.1mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P22.4)
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 4169
$0.190
Add:
Min Qty:  16
Quantity Discounts
16-244$0.190
245-9,899$0.143
9,900$0.101
30,900+$0.081
(image for) 3.5mm X 23mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X023
3.5mm X 23mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 2296
$0.140
Add:
Min Qty:  22
Quantity Discounts
22-333$0.140
334-13,499$0.105
13,500-41,699$0.074
41,700+$0.060
(image for) 3.5mm X 23.7mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P24) N3.50X023.7
3.5mm X 23.7mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P24)
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 2433
$0.200
Add:
Min Qty:  15
Quantity Discounts
15-233$0.200
234-9,499$0.150
9,500$0.105
29,800+$0.084
(image for) 3.5mm X 24mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X024
3.5mm X 24mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 268
$0.150
Add:
Min Qty:  20
Quantity Discounts
20-309$0.150
310-12,499$0.113
12,500-39,099$0.080
39,100+$0.064
(image for) 3.5mm X 24.7mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P25) N3.50X024.7
3.5mm X 24.7mm (NBR) Buna-N 70 Duro Metric O-Ring (JIS P25)
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: 56
$0.200
Add:
Min Qty:  15
Quantity Discounts
15-233$0.200
234-9,499$0.150
9,500$0.105
29,800+$0.084
(image for) 3.5mm X 25mm (NBR) Buna-N 70 Duro Metric O-Ring N3.50X025
3.5mm X 25mm (NBR) Buna-N 70 Duro Metric O-Ring
Buna-N Nitrile (NBR) Metric O-Rings – 70 Durometer The O-Ring Store LLC provides high-quality Buna-N Nitrile (NBR) Metric O-Rings , engineered for superior sealing performance across industrial, automotive, and commercial applications. Our 70-durometer Buna-N O-Rings offer excellent resistance to...
 In Stock: -40
$0.150
Add:
Min Qty:  20
Quantity Discounts
20-309$0.150
310-12,499$0.113
12,500-39,099$0.080
39,100+$0.064
Displaying 1 to 25 (of 206 Products)
Copyright © 2025 The O-Ring Store, LLC
1847 Wilma Dr, Clarkston WA 99403
Phone 208-413-6377 - Fax 208-413-6719