682Seals

Mechanical Seal Specification

This is a collaborative effort to develop an overlay for "Pumps - Shaft Sealing Systems for Centrifugal and Rotary Pumps", ANSI/API Standard 682, 3rd Edition, September 2004. (API 682 is functionally equivalent to the international standard ISO 21049.)

An overlay is defined as a document containing specific choices, comments, exceptions and additional requirements that are used to supplement an existing standard. The overlay takes precedence over the standard.

Many large companies have their own proprietary overlays to international standards. By participating in this wiki, rotating equipment engineers and technicians will be able to take part in developing a collaborative overlay that can be referenced and used to improve the standard. Some companies, especially smaller ones, may choose to use this overlay directly rather than develop their own overlay. Members of the API 682 and ISO 21049 committees can refer to this wiki overlay for the degree of worldwide acceptance and interpretation of the standard.