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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
103 X 3 KALREZ-70 N/A
158039 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3 KALREZ-75 N/A
158040 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3 KALREZ-90 N/A
158041 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3.5 KALREZ-70 N/A
158042 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3.5 KALREZ-75 N/A
158043 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3.5 KALREZ-90 N/A
158044 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3.55 KALREZ-70 N/A
158045 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3.55 KALREZ-75 N/A
158046 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 3.55 KALREZ-90 N/A
158047 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 4 KALREZ-70 N/A
158048 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 4 KALREZ-75 N/A
158049 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 4 KALREZ-90 N/A
158050 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 5 KALREZ-70 N/A
158051 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 5 KALREZ-75 N/A
158052 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 5 KALREZ-90 N/A
158053 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 5.3 KALREZ-70 N/A
158054 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.30 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 5.3 KALREZ-75 N/A
158055 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.30 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 5.3 KALREZ-90 N/A
158056 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.30 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 6 KALREZ-70 N/A
158057 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 70 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 6 KALREZ-75 N/A
158058 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 75 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103 X 6 KALREZ-90 N/A
158059 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 90 N/A 103.00 mm N/A O-rings are used in the military, automotive,
103.5 X 4.5 KALREZ-70 N/A
158060 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 70 N/A 103.50 mm N/A O-rings are used in the military, automotive,
103.5 X 4.5 KALREZ-75 N/A
158061 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 75 N/A 103.50 mm N/A O-rings are used in the military, automotive,
103.5 X 4.5 KALREZ-90 N/A
158062 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 90 N/A 103.50 mm N/A O-rings are used in the military, automotive,
104 X 3 KALREZ-70 N/A
158063 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 104.00 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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