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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
3.2 X 1.6 KALREZ-75 N/A
163941 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.60 mm N/A 75 N/A 3.20 mm N/A O-rings are used in the military, automotive,
3.2 X 1.6 KALREZ-90 N/A
163942 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.60 mm N/A 90 N/A 3.20 mm N/A O-rings are used in the military, automotive,
3.25 X 1.27 KALREZ-70 N/A
163943 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.27 mm N/A 70 N/A 3.25 mm N/A O-rings are used in the military, automotive,
3.25 X 1.27 KALREZ-75 N/A
163944 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.27 mm N/A 75 N/A 3.25 mm N/A O-rings are used in the military, automotive,
3.25 X 1.27 KALREZ-90 N/A
163945 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.27 mm N/A 90 N/A 3.25 mm N/A O-rings are used in the military, automotive,
3.3 X 1 KALREZ-70 N/A
163946 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.00 mm N/A 70 N/A 3.30 mm N/A O-rings are used in the military, automotive,
3.3 X 1 KALREZ-75 N/A
163947 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.00 mm N/A 75 N/A 3.30 mm N/A O-rings are used in the military, automotive,
3.3 X 1 KALREZ-90 N/A
163948 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.00 mm N/A 90 N/A 3.30 mm N/A O-rings are used in the military, automotive,
3.3 X 2.4 KALREZ-70 N/A
163949 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 70 N/A 3.30 mm N/A O-rings are used in the military, automotive,
3.3 X 2.4 KALREZ-75 N/A
163950 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 75 N/A 3.30 mm N/A O-rings are used in the military, automotive,
3.3 X 2.4 KALREZ-90 N/A
163951 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 90 N/A 3.30 mm N/A O-rings are used in the military, automotive,
3.4 X 1.9 KALREZ-70 N/A
163952 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.90 mm N/A 70 N/A 3.40 mm N/A O-rings are used in the military, automotive,
3.4 X 1.9 KALREZ-75 N/A
163953 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.90 mm N/A 75 N/A 3.40 mm N/A O-rings are used in the military, automotive,
3.4 X 1.9 KALREZ-90 N/A
163954 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.90 mm N/A 90 N/A 3.40 mm N/A O-rings are used in the military, automotive,
3.5 X 1 KALREZ-70 N/A
163955 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.00 mm N/A 70 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1 KALREZ-75 N/A
163956 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.00 mm N/A 75 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1 KALREZ-90 N/A
163957 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.00 mm N/A 90 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1.2 KALREZ-70 N/A
163958 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.20 mm N/A 70 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1.2 KALREZ-75 N/A
163959 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.20 mm N/A 75 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1.2 KALREZ-90 N/A
163960 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.20 mm N/A 90 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1.5 KALREZ-70 N/A
163961 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S4 N/A 1.50 mm N/A 70 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1.5 KALREZ-75 N/A
163962 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S4 N/A 1.50 mm N/A 75 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 1.5 KALREZ-90 N/A
163963 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S4 N/A 1.50 mm N/A 90 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 2 KALREZ-70 N/A
163964 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.00 mm N/A 70 N/A 3.50 mm N/A O-rings are used in the military, automotive,
3.5 X 2 KALREZ-75 N/A
163965 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.00 mm N/A 75 N/A 3.50 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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