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Metric O-Rings are employed in specialized applications and, like the name suggests, are standardized by metric dimensions. With a wide variety of sizes available, Metric O-Rings fill in the gaps left by the standardized AS568 o-ring chart. Metric O-Ring sizing is determined by the o-ring's inside diameter and cross section width. Perfluoroelastomer is also known as FKKM and Perfloro.

Parts resist over 1,800 different chemicals, while offering the high temperature stability of PTFE (327°C). They’re used in aggressive chemical processing, pharmaceutical, oil rcovery, gas recovery, and aerospace applications. The proven, long-term performance of Kalrez® parts can mean less repairs, seal changes, inspections and equipment uptime for greater productivity and yield. For more information, please see: Comparison Properties Chart, PTFE Encapsulated O-rings, Material Shelf Life, and O-ring Groove Design Chart.
Metric O-Rings
Unit of Measure
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Item #

IntegrationID

Type

Material

Cross Reference

Cross Section Width

Durometer

Inside Diameter

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Quantity
33.3 X 2.4 KALREZ-75 N/A
164622
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 75 N/A 33.30 mm N/A O-rings are used in the military, automotive,
33.3 X 2.4 KALREZ-90 N/A
164623
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 90 N/A 33.30 mm N/A O-rings are used in the military, automotive,
33.5 X 1.5 KALREZ-70 N/A
164624
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 1.5 KALREZ-75 N/A
164625
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 1.5 KALREZ-90 N/A
164626
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2 KALREZ-70 N/A
164627
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S34 N/A 2.00 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2 KALREZ-75 N/A
164628
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S34 N/A 2.00 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2 KALREZ-90 N/A
164629
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S34 N/A 2.00 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2.5 KALREZ-70 N/A
164630
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2.5 KALREZ-75 N/A
164631
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2.5 KALREZ-90 N/A
164632
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2.65 KALREZ-70 N/A
164633
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.65 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2.65 KALREZ-75 N/A
164634
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.65 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 2.65 KALREZ-90 N/A
164635
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.65 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 3 KALREZ-70 N/A
164636
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 3 KALREZ-75 N/A
164637
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 3 KALREZ-90 N/A
164638
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 3.55 KALREZ-70 N/A
164639
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 3.55 KALREZ-75 N/A
164640
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 3.55 KALREZ-90 N/A
164641
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 4 KALREZ-70 N/A
164642
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A V34 N/A 4.00 mm N/A 70 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 4 KALREZ-75 N/A
164643
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A V34 N/A 4.00 mm N/A 75 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.5 X 4 KALREZ-90 N/A
164644
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A V34 N/A 4.00 mm N/A 90 N/A 33.50 mm N/A O-rings are used in the military, automotive,
33.7 X 3.5 KALREZ-70 N/A
164645
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A P34 N/A 3.50 mm N/A 70 N/A 33.70 mm N/A O-rings are used in the military, automotive,
33.7 X 3.5 KALREZ-75 N/A
164646
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A P34 N/A 3.50 mm N/A 75 N/A 33.70 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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