How to Measure an O Ring (with only basic tools) Watch on. O-rings come in standard sizes, which are described by both the inner diameter (I.D.) and the cross section diameter (C.S.). The most common O-ring sizes are imperial (inch) sizes, and the two standard O-ring size charts are imperial and metric.

Cross-sectional diameters range from 0.040 to 0.275 inch. Inside diameters range from 0.029 to 25.940 inches. There are 369 standard sizes. ID Inside Diameter OD Outside Diameter CS Cross Section .070″ .103″ .139″ .210″ .275″ Here is an interactive chart for standard o-ring dimensions. entries Showing 1 to 25 of 369 entries Previous Next

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 

901 3/32 902 1/8 903 3/16 904 1/4 905 5/16 906 3/8 907 7/16 908 1/2 909 9/16 910 5/8 911 11/16 912 3/4 913 13/16 914 7/8 916 1 918 1-1/8 920 1-1/4 924 1-1/2 928 1-3/4

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Place an O-ring onto one of these sizing cones to determine the size of your O-ring. Cone for 1/4” to 3” ID ranges comes with a sizing tape to identify 

Need to find a specific O-Ring? Our AS568 O-Ring Size chart is easy to use and navigate through. We also go over how to properly measure the o-ring, what dimensions to look for and some handy formulas that will make your life easy. Remember if you see something not in stock, reach out and we can find it for you.

ISO 6149 Size Chart ; 2.90X038.6, M42 X 2, 2.9, 38.6, 0.114 ; 2.90X044.6, M48 X 2, 2.9, 44.6, 0.114 

801 rows · Use the metric o-ring size chart to find common metric o-ring sizes by cross

for non-standard sizes. Parco offers O-rings in all 369 standard sizes, shown on the enclosed chart. Metric Sizes Standard metric sizes for O-rings are defined by International Standard ISO 3601-1:2002: Fluid power systems—O-rings—Part 1: Inside diameters, cross-sections, tolerances and size identification code. That standard groups metric

O-Ring Size Chart - 1mm up to 3.53mm Width Thickness ; ORBS047, 1.78mm Width x 114.00mm Inside Diameter O-Ring ; ORBS048, 1.78mm Width x 120.00mm Inside Diameter