| 4G6330 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 60001-5 | U2164 | JAMES WALKER & CO LTD |
| CD401-5 | K0013 | HALL AND HALL LTD |
| BS1806-010 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-010 | K7766 | BRITISH STANDARDS INSTITUTION |
| CD401-5 | U4330 | HALLITE SEALS INTERNATIONAL LTD T/A I POLYTEK |
| HDS119-1-5 | K0659 | CLAVERHAM LTD |
| SP900B5 | U1068 | TRELLEBORG SEALING SOLUTIONS (UK)LTD |