Provides requirements and guidelines for packers and bridge plugs for use in the petroleum and natural gas industry. This International Standard provides requirements for the functional specification and technical specification, including design, design verification and validation, materials, documentation and data control, repair, shipment, and storage. In addition, products covered by this International Standard apply only to applications within a conduit. Installation and maintenance of these products are outside the scope of this standard.This edition of API Spec 11D1 is the identical adoption of ISO 14310:2008, Petroleum and natural gas industries-Downhole equipment-Packers and bridge plugs with the addition of an API Monogram Annex.