-900 Series - Boss

Oil-Resistant Hard Buna-N O-Rings for Tube Fittings with SAE Straight-Thread Connection

SAE J1926-1

Also known as Boss O-rings, these are for use in tube fittings with a straight-thread connection. They are made of hard Buna-N, which is resilient and offers excellent resistance to wear, grease, petroleum fluids, and motor oil. These O-rings have a round profile and are suitable for a wide range of static and dynamic sealing applications. They're sized to the SAE standard AS568.

Recommended by the NFPA for optimal leakage control in medium and high pressure hydraulic systems. The male fitting has a straight thread and O-ring. The female port has a straight thread, a machined surface (minimum spotface) and a chamfer to accept the O-ring. The seal take place by compressing the O-ring in the chamfer. The threads hold the connection mechanically. This fitting is also known as O-Ring Boss (ORB) and uses these Boss O-Rings.

Displaying 1 to 20 (of 20 Products)
Product Image Model Product Name Qty. Price Quantity Discounts
(image for) AS568-901 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90901
AS568-901 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 3/32" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 3494
$0.040
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Min Qty:  100
Quantity Discounts
100-999$0.040
1,000-4,999$0.015
5,000$0.008
50,000+$0.006
(image for) AS568-902 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -2) B90902
AS568-902 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -2)
Tube Size OD: 1/8", , SAE Dash Size -2, Thread Size 5/16-24 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It...
 In Stock: 26372
$0.040
Add:
Min Qty:  100
Quantity Discounts
100-999$0.040
1,000-49,999$0.013
50,000$0.007
500,000+$0.005
(image for) AS568-903 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -3) B90903
AS568-903 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -3)
Tube Size OD: 3/16", SAE Dash Size -3, Thread Size 3/8-24 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has...
 In Stock: 32233
$0.040
Add:
Min Qty:  100
Quantity Discounts
100-999$0.040
1,000-49,999$0.014
50,000$0.007
500,000+$0.005
(image for) AS568-904 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -4) B90904
AS568-904 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -4)
Tube Size OD: 1/4", SAE Dash Size -4, Thread Size 7/16-20 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has...
 In Stock: 118981
$0.040
Add:
Min Qty:  100
Quantity Discounts
100-999$0.040
1,000-49,999$0.015
50,000$0.008
500,000+$0.006
(image for) AS568-905 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -5) B90905
AS568-905 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -5)
Tube Size OD: 5/16", SAE Dash Size -5, Thread Size 1/2-20 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has...
 In Stock: 11413
$0.060
Add:
Min Qty:  100
Quantity Discounts
100-999$0.060
1,000-49,999$0.017
50,000$0.009
500,000+$0.006
(image for) AS568-906 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -6) B90906
AS568-906 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -6)
Tube Size OD: 3/8", SAE Dash Size -6, Thread Size 9/16-18 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has...
 In Stock: 10718
$0.060
Add:
Min Qty:  100
Quantity Discounts
100-999$0.060
1,000-49,999$0.020
50,000$0.011
500,000+$0.008
(image for) AS568-907 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90907
AS568-907 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 7/16" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 24723
$0.080
Add:
Min Qty:  100
Quantity Discounts
100-999$0.080
1,000-49,999$0.024
50,000$0.013
500,000+$0.009
(image for) AS568-908 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -8) B90908
AS568-908 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -8)
Tube Size OD: 1/2", SAE Dash Size -8, Thread Size 3/4"-16 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It...
 In Stock: 3249
$0.100
Add:
Min Qty:  100
Quantity Discounts
100-999$0.100
1,000-49,999$0.032
50,000$0.017
500,000+$0.012
(image for) AS568-909 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90909
AS568-909 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 9/16" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 12614
$0.120
Add:
Min Qty:  100
Quantity Discounts
100-999$0.120
1,000-49,999$0.039
50,000$0.020
500,000+$0.014
(image for) AS568-910 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -10) B90910
AS568-910 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -10)
Tube Size OD: 5/8", SAE Dash Size -10, Thread Size 7/8-14 UNF Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has...
 In Stock: 6295
$0.120
Add:
Min Qty:  100
Quantity Discounts
100-999$0.120
1,000-49,999$0.041
50,000$0.022
500,000+$0.015
(image for) AS568-911 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90911
AS568-911 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 11/16" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 7877
$0.180
Add:
Min Qty:  100
Quantity Discounts
100-999$0.180
1,000-49,999$0.064
50,000$0.033
500,000+$0.023
(image for) AS568-912 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -12) B90912
AS568-912 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -12)
Tube Size OD: 3/4", SAE Dash Size -12, Thread Size 1-1/16-12 UN Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It...
 In Stock: -50
$0.180
Add:
Min Qty:  50
Quantity Discounts
50-499$0.180
500-24,999$0.064
25,000$0.034
250,000+$0.023
(image for) AS568-913 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90913
AS568-913 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 13/16" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 7795
$0.200
Add:
Min Qty:  30
Quantity Discounts
30-299$0.200
300-14,999$0.069
15,000$0.036
150,000+$0.025
(image for) AS568-914 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -14) B90914
AS568-914 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -14)
Tube Size OD: 7/8", SAE Dash Size -14, Thread Size 1-3/16-12 UN Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It...
 In Stock: 9942
$0.200
Add:
Min Qty:  30
Quantity Discounts
30-299$0.200
300-14,999$0.072
15,000$0.038
150,000+$0.026
(image for) AS568-916 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -16) B90916
AS568-916 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -16)
Tube Size OD: 1", SAE Dash Size -16, Thread Size 1-5/16-12 UN Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has...
 In Stock: 3323
$0.220
Add:
Min Qty:  30
Quantity Discounts
30-299$0.220
300-14,999$0.080
15,000$0.042
150,000+$0.029
(image for) AS568-918 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90918
AS568-918 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 1 1/8" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 9649
$0.260
Add:
Min Qty:  30
Quantity Discounts
30-299$0.260
300-14,999$0.097
15,000$0.051
150,000+$0.035
(image for) AS568-920 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -20) B90920
AS568-920 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -20)
Tube Size OD: 1-1/4", SAE Dash Size -20, Thread Size 1-5/8-12 UN Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It...
 In Stock: 8117
$0.300
Add:
Min Qty:  20
Quantity Discounts
20-199$0.300
200-9,999$0.110
10,000-99,999$0.058
100,000+$0.040
(image for) AS568-924 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -24) B90924
AS568-924 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -24)
Tube Size OD: 1-1/2", SAE Dash Size -24, Thread Size 1-7/8-12 UN Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It...
 In Stock: 10162
$0.320
Add:
Min Qty:  20
Quantity Discounts
20-199$0.320
200-9,999$0.124
10,000-99,999$0.065
100,000+$0.045
(image for) AS568-928 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring B90928
AS568-928 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring
Tube Size OD: 1 3/4" Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a temperature range of -40F to +250F and...
 In Stock: 6202
$0.380
Add:
Min Qty:  20
Quantity Discounts
20-199$0.380
200-9,999$0.144
10,000-99,999$0.075
100,000+$0.052
(image for) AS568-932 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -32) B90932
AS568-932 B90 (NBR) Buna-N Nitrile 90 Duro O-Ring (SAE -32)
Tube Size OD: 2", SAE Dash Size -32, Thread Size 2-1/2-12 UN Buna-N O-Rings 90 Duro: exceptionally suited for high pressure applications. Nitrile is also known as Buna-N or NBR, is a copolymer of Butadiene and Acrylonitirle. It is the most commonly used elastomer for sealing products. It has a...
 In Stock: 5109
$0.440
Add:
Min Qty:  20
Quantity Discounts
20-199$0.440
200-9,999$0.164
10,000-99,999$0.086
100,000+$0.059
Displaying 1 to 20 (of 20 Products)
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