| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806-247 | K7766 | BRITISH STANDARDS INSTITUTION |
| R4462 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| R4462-P90 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| R4462ML5372 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| BSM48-247 | K7766 | BRITISH STANDARDS INSTITUTION |