| 451 | K7766 | BRITISH STANDARDS INSTITUTION |
| B40141 | K1806 | MINISTRY OF DEFENCE, DE&S UNDERWATER AND ELECTRONIC WARFARE PT (UEW IPT) |
| BS1806-451 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-451 | K7766 | BRITISH STANDARDS INSTITUTION |
| BOR015 | U4708 | HMD SEAL/LESS PUMPS LTD |
| BOR015 | U7901 | HMD SEAL/LESS PUMPS LTD |
| DEFSTAN02-337-451-MN70 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-451-MN70 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-451-MN70-(N73B) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |