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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
139 X 3 KALREZ-75 N/A
159420 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 3 KALREZ-90 N/A
159421 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 3.5 KALREZ-70 N/A
159422 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 70 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 3.5 KALREZ-75 N/A
159423 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 75 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 3.5 KALREZ-90 N/A
159424 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.50 mm N/A 90 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 4 KALREZ-70 N/A
159425 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 70 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 4 KALREZ-75 N/A
159426 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 75 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 4 KALREZ-90 N/A
159427 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.00 mm N/A 90 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 4.2 KALREZ-70 N/A
159428 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.20 mm N/A 70 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 4.2 KALREZ-75 N/A
159429 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.20 mm N/A 75 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 4.2 KALREZ-90 N/A
159430 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.20 mm N/A 90 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 5 KALREZ-70 N/A
159431 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 70 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 5 KALREZ-75 N/A
159432 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 75 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139 X 5 KALREZ-90 N/A
159433 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.00 mm N/A 90 N/A 139.00 mm N/A O-rings are used in the military, automotive,
139.07 X 5.33 KALREZ-70 N/A
159434 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 357 N/A 5.33 mm N/A 70 N/A 139.07 mm N/A O-rings are used in the military, automotive,
139.07 X 5.33 KALREZ-75 N/A
159435 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 357 N/A 5.33 mm N/A 75 N/A 139.07 mm N/A O-rings are used in the military, automotive,
139.07 X 5.33 KALREZ-90 N/A
159436 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 357 N/A 5.33 mm N/A 90 N/A 139.07 mm N/A O-rings are used in the military, automotive,
139.07 X 6.99 KALREZ-70 N/A
159437 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 433 N/A 6.99 mm N/A 70 N/A 139.07 mm N/A O-rings are used in the military, automotive,
139.07 X 6.99 KALREZ-75 N/A
159438 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 433 N/A 6.99 mm N/A 75 N/A 139.07 mm N/A O-rings are used in the military, automotive,
139.07 X 6.99 KALREZ-90 N/A
159439 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 433 N/A 6.99 mm N/A 90 N/A 139.07 mm N/A O-rings are used in the military, automotive,
139.2 X 5.7 KALREZ-70 N/A
159440 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.70 mm N/A 70 N/A 139.20 mm N/A O-rings are used in the military, automotive,
139.2 X 5.7 KALREZ-75 N/A
159441 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.70 mm N/A 75 N/A 139.20 mm N/A O-rings are used in the military, automotive,
139.2 X 5.7 KALREZ-90 N/A
159442 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 5.70 mm N/A 90 N/A 139.20 mm N/A O-rings are used in the military, automotive,
139.2 X 6 KALREZ-70 N/A
159443 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 70 N/A 139.20 mm N/A O-rings are used in the military, automotive,
139.2 X 6 KALREZ-75 N/A
159444 		N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 6.00 mm N/A 75 N/A 139.20 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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