This standard specifies the O-ring for adaptors with lockring and the dimensions.
BS EN 2607:2005 Referenced Document
EN 2602 Aerospace series - Ports for adaptors, threaded, with lockring - Geometric configuration*, 2024-04-18 Update
EN 2603 Aerospace series - Port ends for adaptors, threaded, with lockring - Geometric configuration*, 2024-04-18 Update
EN 2604 Aerospace series - 8° 30' interface for adaptors, threaded, with lockring - Geometric configuration*, 2024-04-18 Update
EN 2605 Aerospace series - 24° interface for adaptors, threaded, with lockring - Geometric configuration*, 2024-04-18 Update
ISO 3601-1 Fluid power systems - O-rings - Part 1: Inside diameters, cross-sections, tolerances and designation codes; Technical Corrigendum 1*, 2012-07-01 Update
BS EN 2607:2005 history
2006BS EN 2607:2005 Aerospace series - O-rings for adaptors, threaded, with lockring - Survey