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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
31.34 X 3.53 KALREZ-70 N/A
164219
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 218 N/A 3.53 mm N/A 70 N/A 31.34 mm N/A O-rings are used in the military, automotive,
31.34 X 3.53 KALREZ-75 N/A
164220
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 218 N/A 3.53 mm N/A 75 N/A 31.34 mm N/A O-rings are used in the military, automotive,
31.34 X 3.53 KALREZ-90 N/A
164221
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 218 N/A 3.53 mm N/A 90 N/A 31.34 mm N/A O-rings are used in the military, automotive,
31.42 X 2.62 KALREZ-70 N/A
164222
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 124 N/A 2.62 mm N/A 70 N/A 31.42 mm N/A O-rings are used in the military, automotive,
31.42 X 2.62 KALREZ-75 N/A
164223
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 124 N/A 2.62 mm N/A 75 N/A 31.42 mm N/A O-rings are used in the military, automotive,
31.42 X 2.62 KALREZ-90 N/A
164224
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 124 N/A 2.62 mm N/A 90 N/A 31.42 mm N/A O-rings are used in the military, automotive,
31.47 X 1.78 KALREZ-70 N/A
164225
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 26 N/A 1.78 mm N/A 70 N/A 31.47 mm N/A O-rings are used in the military, automotive,
31.47 X 1.78 KALREZ-75 N/A
164226
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 26 N/A 1.78 mm N/A 75 N/A 31.47 mm N/A O-rings are used in the military, automotive,
31.47 X 1.78 KALREZ-90 N/A
164227
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A 26 N/A 1.78 mm N/A 90 N/A 31.47 mm N/A O-rings are used in the military, automotive,
31.5 X 1.5 KALREZ-70 N/A
164228
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 70 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 1.5 KALREZ-75 N/A
164229
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 75 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 1.5 KALREZ-90 N/A
164230
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 1.50 mm N/A 90 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2 KALREZ-70 N/A
164231
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S32 N/A 2.00 mm N/A 70 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2 KALREZ-75 N/A
164232
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S32 N/A 2.00 mm N/A 75 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2 KALREZ-90 N/A
164233
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A S32 N/A 2.00 mm N/A 90 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2.5 KALREZ-70 N/A
164234
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 70 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2.5 KALREZ-75 N/A
164235
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 75 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2.5 KALREZ-90 N/A
164236
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.50 mm N/A 90 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2.65 KALREZ-70 N/A
164237
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.65 mm N/A 70 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2.65 KALREZ-75 N/A
164238
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.65 mm N/A 75 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 2.65 KALREZ-90 N/A
164239
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 2.65 mm N/A 90 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 3 KALREZ-70 N/A
164240
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 70 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 3 KALREZ-75 N/A
164241
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 75 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 3 KALREZ-90 N/A
164242
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.00 mm N/A 90 N/A 31.50 mm N/A O-rings are used in the military, automotive,
31.5 X 3.55 KALREZ-70 N/A
164243
N/A Metric Standard O-Ring N/A Perfluoroelastomer N/A N/A 3.55 mm N/A 70 N/A 31.50 mm N/A O-rings are used in the military, automotive,
Unit of Measure
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