The purpose of this document is to provide the aerospace industry with standardized dimensional criteria for static axial elastomeric O-ring seal glands, without back-up rings. It supplements ARP 1231, Gland Design, Elastomeric O-Ring Seals, General Considerations. This document establishes standard gland design criteria and dimensions for static axial O-ring seal applications without anti-extrusion devices. SI Unit conversions for U.S. Customary Units have been provided for reference purposes. The criteria herein are similar, but not identical, to those in MIL-G-5514.