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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
123.44 X 1.78 KALREZ-70 N/A
158867 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A BS546 N/A 1.78 mm N/A 70 N/A 123.44 mm N/A O-rings are used in the military, automotive,
123.44 X 1.78 KALREZ-75 N/A
158868 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A BS546 N/A 1.78 mm N/A 75 N/A 123.44 mm N/A O-rings are used in the military, automotive,
123.44 X 1.78 KALREZ-90 N/A
158869 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A BS546 N/A 1.78 mm N/A 90 N/A 123.44 mm N/A O-rings are used in the military, automotive,
123.83 X 5.33 KALREZ-70 N/A
158870 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A BS862 N/A 5.33 mm N/A 70 N/A 123.83 mm N/A O-rings are used in the military, automotive,
123.83 X 5.33 KALREZ-75 N/A
158871 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A BS862 N/A 5.33 mm N/A 75 N/A 123.83 mm N/A O-rings are used in the military, automotive,
123.83 X 5.33 KALREZ-90 N/A
158872 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A BS862 N/A 5.33 mm N/A 90 N/A 123.83 mm N/A O-rings are used in the military, automotive,
124 X 2.5 KALREZ-70 N/A
158873 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 2.5 KALREZ-75 N/A
158874 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 75 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 2.5 KALREZ-90 N/A
158875 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 90 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 3 KALREZ-70 N/A
158876 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 3 KALREZ-75 N/A
158877 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 3 KALREZ-90 N/A
158878 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 3.5 KALREZ-70 N/A
158879 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 3.5 KALREZ-75 N/A
158880 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 75 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 3.5 KALREZ-90 N/A
158881 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 90 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 4 KALREZ-70 N/A
158882 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 4 KALREZ-75 N/A
158883 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 75 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 4 KALREZ-90 N/A
158884 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 90 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 4.5 KALREZ-70 N/A
158885 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 4.5 KALREZ-75 N/A
158886 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 75 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 4.5 KALREZ-90 N/A
158887 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 90 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 5 KALREZ-70 N/A
158888 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 5 KALREZ-75 N/A
158889 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 75 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 5 KALREZ-90 N/A
158890 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 90 N/A 124.00 mm N/A O-rings are used in the military, automotive,
124 X 5.7 KALREZ-70 N/A
158891 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.70 mm N/A 70 N/A 124.00 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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