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| 17-27B | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| BS1806-233 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-233 | K7766 | BRITISH STANDARDS INSTITUTION |
| 27QA1399 | U1278 | MINISTRY OF DEFENCE NAVY |
| 27QA1399 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| SP901B11 | U1068 | TRELLEBORG SEALING SOLUTIONS (UK)LTD |