| 100-252-0270 | U1068 | TRELLEBORG SEALING SOLUTIONS (UK)LTD |
| 10AC4175 | U1725 | MINISTRY OF DEFENCE AIR DOMESTIC R FERENCE NUMBER USE ONLY |
| 17-27B-252 | 99237 | AIRFORCE-NAVY AERONAUTICAL DESIGN STANDARD |
| BS1806-252 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-252 | K7766 | BRITISH STANDARDS INSTITUTION |
| SP901B30 | U1068 | TRELLEBORG SEALING SOLUTIONS (UK)LTD |