Viewing: Static & Pressure Seals > O-Rings > Nitrile 70 Standard O-rings

AJRWeb standard AS568 o-ring sizes Nitrile (Buna-N) 70 durometer. 

The most commonly used o-ring material, Nitrile 70 is a general purpose sealing material for petroleum oils and fluids, silicone greases and oils, greases and air. Temp Range: -40° F to 250° F (-40° C to 120° C)

Larger volume pricing is available, as are other materials. Please use our RFQ/contact link above to request a quote. All stock items subject to prior sale. 

Delivery for stock quantities is 1-2 business days. All other balances are typically 9-12 weeks. Please see Shop menu for other materials or contact us to request a quote. 

NOTE: Pull down menu to see package size options. 



There are 121 items available for purchase in this category. (15 per page)



All prices are per lot. Lot is quantity as listed. Items are not available as one (1) each. All prices in USD, FOB San Luis Obispo, CA. Contact us for additional price breaks and for larger volume pricing.



568-220, Nitrile 70
Item# OR-220-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 0

Size Chart:

Inch
Nominal I.D. 1 3/8
Nominal O.D. 1 5/8
Nominal c/s 1/8
I.D. 1.359
± .012
c/s .139
+/- .004



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568-233, Nitrile 70
Item# OR-233-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 0

Size Chart:

Inch
Nominal I.D. 2 7/8
Nominal O.D. 3 1/8
Nominal c/s 1/8
I.D. 2.859
± .024
c/s .139
+/- .004



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568-234, Nitrile 70
Item# OR-234-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 2325

Size Chart:

Inch
Nominal I.D. 3
Nominal O.D. 3 1/4
Nominal c/s 1/8
I.D. 2.984
± .024
c/s .139
+/- .004



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568-235, Nitrile 70
Item# OR-235-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 0

Size Chart:

Inch
Nominal I.D. 3 1/8
Nominal O.D. 3 3/8
Nominal c/s 1/8
I.D. 3.109
± .024
c/s .139
+/- .004



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568-236, Nitrile 70
Item# OR-236-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 350

Size Chart:

Inch
Nominal I.D. 3 1/4
Nominal O.D. 3 1/2
Nominal c/s 1/8
I.D. 3.234
± .024
c/s .139
+/- .004



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568-241, Nitrile 70
Item# OR-241-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 0

Size Chart:

Inch
Nominal I.D. 3 7/8
Nominal O.D. 4 1/8
Nominal c/s 1/8
I.D. 3.859
± .028
c/s .139
+/- .004



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568-242, Nitrile 70
Item# OR-242-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 144

Size Chart:

Inch
Nominal I.D. 4
Nominal O.D. 4 1/4
Nominal c/s 1/8
I.D. 3.984
± .028
c/s .139
+/- .004



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568-246, Nitrile 70
Item# OR-246-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 360

Size Chart:

Inch
Nominal I.D. 4 1/2
Nominal O.D. 4 3/4
Nominal c/s 1/8
I.D. 4.484
± .030
c/s .139
+/- .004



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568-248, Nitrile 70
Item# OR-248-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 0

Size Chart:

Inch
Nominal I.D. 4 3/4
Nominal O.D. 5
Nominal c/s 1/8
I.D. 4.734
± .030
c/s .139
+/- .004



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568-250, Nitrile 70
Item# OR-250-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 1837

Size Chart:

Inch
Nominal I.D. 5
Nominal O.D. 5 1/4
Nominal c/s 1/8
I.D. 4.984
± .035
c/s .139
+/- .004



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568-254, Nitrile 70
Item# OR-254-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 200

Size Chart:

Inch
Nominal I.D. 5 1/2
Nominal O.D. 5 3/4
Nominal c/s 1/8
I.D. 5.484
± .035
c/s .139
+/- .004



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568-256, Nitrile 70
Item# OR-256-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 34

Size Chart:

Inch
Nominal I.D. 5 3/4
Nominal O.D. 6
Nominal c/s 1/8
I.D. 5.734
± .035
c/s .139
+/- .004



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568-260, Nitrile 70
Item# OR-260-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 228

Size Chart:

Inch
Nominal I.D. 6 1/2
Nominal O.D. 6 3/4
Nominal c/s 1/8
I.D. 6.484
± .040
c/s .139
+/- .004



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568-261, Nitrile 70
Item# OR-261-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 0

Size Chart:

Inch
Nominal I.D. 6 3/4
Nominal O.D. 7
Nominal c/s 1/8
I.D. 6.734
± .040
c/s .139
+/- .004



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568-266, Nitrile 70
Item# OR-266-N7

Details:

Standard o-ring, Nitrile 70, 568-series


Stock Qty.: 96

Size Chart:

Inch
Nominal I.D. 8
Nominal O.D. 8 1/4
Nominal c/s 1/8
I.D. 7.984
± .045
c/s .139
+/- .004



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  More Info