| 223 | K7766 | BRITISH STANDARDS INSTITUTION |
| 910-414-0079 | K5974 | ROLLS-ROYCE PLC NAVAL MARINE |
| DEFSTAN02-337-223-HN90 | K0851 | MINISTRY OF DEFENCE DIRECTORATE OF STANDARDIZATION STAN 1 |
| NES 337 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| BS1806-223 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-223 | K7766 | BRITISH STANDARDS INSTITUTION |
| R4162E90 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| NES 337-1984 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES 337-223-HN90 | K2516 | MINISTRY OF DEFENCE NAVY SHIPS SUPPORT AGENCY |
| NES337-223-HN90-(N93H) | L6427 | MOBILE VALVE REPAIRS |
| NES337-223-HN90-(N93H) | U6183 | PRECISION POLYMER ENGINEERING LIMITE |