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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
27.3 X 2.4 KALREZ-75 N/A
163338
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 75 N/A 27.30 mm N/A O-rings are used in the military, automotive,
27.3 X 2.4 KALREZ-90 N/A
163339
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 90 N/A 27.30 mm N/A O-rings are used in the military, automotive,
27.3 X 2.7 KALREZ-70 N/A
163340
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.70 mm N/A 70 N/A 27.30 mm N/A O-rings are used in the military, automotive,
27.3 X 2.7 KALREZ-75 N/A
163341
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.70 mm N/A 75 N/A 27.30 mm N/A O-rings are used in the military, automotive,
27.3 X 2.7 KALREZ-90 N/A
163342
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.70 mm N/A 90 N/A 27.30 mm N/A O-rings are used in the military, automotive,
27.5 X 1.5 KALREZ-70 N/A
163343
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 70 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 1.5 KALREZ-75 N/A
163344
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 75 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 1.5 KALREZ-90 N/A
163345
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 90 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2 KALREZ-70 N/A
163346
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S28 N/A 2.00 mm N/A 70 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2 KALREZ-75 N/A
163347
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S28 N/A 2.00 mm N/A 75 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2 KALREZ-90 N/A
163348
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S28 N/A 2.00 mm N/A 90 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2.4 KALREZ-70 N/A
163349
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 70 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2.4 KALREZ-75 N/A
163350
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 75 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2.4 KALREZ-90 N/A
163351
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 90 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2.5 KALREZ-70 N/A
163352
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 70 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2.5 KALREZ-75 N/A
163353
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 75 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 2.5 KALREZ-90 N/A
163354
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 90 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 3 KALREZ-70 N/A
163355
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 3 KALREZ-75 N/A
163356
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 3 KALREZ-90 N/A
163357
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 4.5 KALREZ-70 N/A
163358
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 70 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 4.5 KALREZ-75 N/A
163359
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 75 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.5 X 4.5 KALREZ-90 N/A
163360
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 4.50 mm N/A 90 N/A 27.50 mm N/A O-rings are used in the military, automotive,
27.6 X 2.4 KALREZ-70 N/A
163361
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 70 N/A 27.60 mm N/A O-rings are used in the military, automotive,
27.6 X 2.4 KALREZ-75 N/A
163362
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.40 mm N/A 75 N/A 27.60 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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