• O-Ring Picture

    Explore our AS-568 & Extended Standard Size O-Rings including our new 5/32" Nominal Cross Section O-Rings. Precision Associates' O-Rings are available off the shelf in several standard compounds. Or try O-Rings in one of 1,200+ specialty materials in 20 polymer groups, including Viton®, AFLAS®, EPDM, Nitrile, HNBR (HSN), XNBR, Neoprene®, Butyl, XNBR, Silicone, Fluorosilicone, Perfluoroelastomer, Urethane, Hypalon®, and Hydrin®.
    Click here to view our 48 page (5Mb) Catalog illustrated with full-size drawings of Standard Size O-Rings plus Dimensions and Tolerances.

  • O-Ring Picture

    Search our 2,600+ Standard & Special Size O-Ring Tooling List. O-Rings are availabe with inside diameters (ID) as small as .004" and as large as 34". If you can't find your O-Ring size, please call - new O ring sizes are added regularly. If we are not tooled for your non-standard O-Ring, we can make a special tool in our On-Site mold shop.

    Click here to view our O-Ring Brochure.

  • O-Ring Picture

    Search our list of Metric O-Rings. O-Rings included on this list are either included in an International Standard, or measure in even mm increments. If you can't find your O-Ring seal in this group, be sure to check out "All O-Rings".

  • O-Ring Cord

    If your O-Ring is not among those listed above, perhaps you can use extruded O-Ring Cord or a Spliced O-Ring. PAI stocks more than 2 dozen sizes of O-Ring Cord in several polymers in both inch and metric sizes. 

    Or let us splice O-Rings to your specification.

    Click here to view our O-Ring Cord Brochure.