Metric O-Rings: Summit Industries stocks a vast assortment of sizes of Metric O-Rings and has access to hundred and hundreds of additional sizes.

Metric O-Rings are available in hundreds of sizes. When ordering or requesting a quotation, specify the size you need based on the Inside Diameter (ID) and Cross Section (CS), as in 108mm x 3mm and the compound, if known, or application and we will help you determine a suitable compound.

Summit's Part Numbering System for Metric O-Rings is based on size and rubber compound. For a 108mm ID by 3mm CS Metric O-Ring in 70 durometer Neoprene, our part number would be constructed as follows:
M (metric) + 108 (ID) + X (by) + 3 (CS) + C (Neoprene) + 70 (duro) or M108X3C70 as we would normally write it.

Listed below are the Commonly Available Cross Sections and Inside Diameters of Metric O-Rings. Call for availability of specific diameters.

Custom Metric O-Rings are available in virtually any size and in any compound required.

Cross Section      Inside Diameters
•          1.0                 1.15 to 25.0
•          1.5                 1.85 to 100.0
•          1.6                 2.2 to 37.1
•          1.78               1.78 to 173.87
•          1.8                 1.8 to 17.0
•          1.9                 2.4 to 8.9
  
  
•          2.0                 2.5 to 100.0
•          2.4                 3.3 to 69.6
•          2.5                 4.0 to 150.0
•          2.62               1.24 to 247.32
•          2.65               14.0 to 38.7
•          2.7                 8.9 to 27.3
•          2.95               21.92 to 34.42

•          3.0                 3.0 to 250.0
•          3.5                 8.0 to 440.0
•          3.53               4.34 to 456.06
•          3.55               18.0 to 200.0
•          3.6                 18.3 to 43.4

•          4.0                 4.0 to 500.0
•          4.5                 6.0 to 315.0

•          5.0                 4.0 to 400.0
•          5.3                 40.0 to 200.0
•          5.33               10.46 to 658.88
•          5.7                 44.2 to 499.3

•          6.0                 6.0 to 579.0
•          6.99               113.67 to 658.88
•          7.0                 206.0 to 670.00
•          8.4                 144.1 to 249.1

  Custom Metric O-Rings are available in virtually any size and in any compound desired. Summit can produce O-Rings to any size you need. Call (817) 861-8144 or email for help with your Metric and Non-Standard O-Ring requirements.