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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

Call for a Quote

Quantity
123 X 2.5 KALREZ-90 N/A
158842 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 90 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 3 KALREZ-70 N/A
158843 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 3 KALREZ-75 N/A
158844 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 3 KALREZ-90 N/A
158845 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 3.5 KALREZ-70 N/A
158846 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 70 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 3.5 KALREZ-75 N/A
158847 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 75 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 3.5 KALREZ-90 N/A
158848 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 90 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 4 KALREZ-70 N/A
158849 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 70 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 4 KALREZ-75 N/A
158850 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 75 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 4 KALREZ-90 N/A
158851 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 90 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 5 KALREZ-70 N/A
158852 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 70 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 5 KALREZ-75 N/A
158853 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 75 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 5 KALREZ-90 N/A
158854 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 90 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 6 KALREZ-70 N/A
158855 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 70 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 6 KALREZ-75 N/A
158856 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 75 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123 X 6 KALREZ-90 N/A
158857 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 90 N/A 123.00 mm N/A O-rings are used in the military, automotive,
123.19 X 5.33 KALREZ-70 N/A
158858 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 352 N/A 5.33 mm N/A 70 N/A 123.19 mm N/A O-rings are used in the military, automotive,
123.19 X 5.33 KALREZ-75 N/A
158859 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 352 N/A 5.33 mm N/A 75 N/A 123.19 mm N/A O-rings are used in the military, automotive,
123.19 X 5.33 KALREZ-90 N/A
158860 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 352 N/A 5.33 mm N/A 90 N/A 123.19 mm N/A O-rings are used in the military, automotive,
123.19 X 6.99 KALREZ-70 N/A
158861 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 428 N/A 6.99 mm N/A 70 N/A 123.19 mm N/A O-rings are used in the military, automotive,
123.19 X 6.99 KALREZ-75 N/A
158862 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 428 N/A 6.99 mm N/A 75 N/A 123.19 mm N/A O-rings are used in the military, automotive,
123.19 X 6.99 KALREZ-90 N/A
158863 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 428 N/A 6.99 mm N/A 90 N/A 123.19 mm N/A O-rings are used in the military, automotive,
123.42 X 3.53 KALREZ-70 N/A
158864 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 249 N/A 3.53 mm N/A 70 N/A 123.42 mm N/A O-rings are used in the military, automotive,
123.42 X 3.53 KALREZ-75 N/A
158865 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 249 N/A 3.53 mm N/A 75 N/A 123.42 mm N/A O-rings are used in the military, automotive,
123.42 X 3.53 KALREZ-90 N/A
158866 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 249 N/A 3.53 mm N/A 90 N/A 123.42 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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