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We make getting o-rings easy. We have the broadest selection of O-Rings available for the maintenance and repair industry. We offer great pricing for OEM and large national accounts and the specifications needed for military, automotive and aerospace seals.

There are several different standards to choose from when it comes to O-ring dimensions. The most popular in the United States is the AS568 standard for O-ring sizes and tolerances. Maintained by the Society of Automotive Engineers, this standard allows the user to choose from five different cross-sections with inside diameters ranging from 1/32" to 26". Tube fitting boss seals are included in AS568 as 900 series O-ring sizes, and are intended for use in MS33649 (now superseded by SAE-AS5202) straight thread tube fittings.



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