| 348 | K7766 | BRITISH STANDARDS INSTITUTION |
| BS1806 | K7766 | BRITISH STANDARDS INSTITUTION |
| R194PS0 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| R6437P90 | K0640 | FREUDENBERG TECHNICAL PRODUCTS |
| BS1806-348 | K7766 | BRITISH STANDARDS INSTITUTION |
| BSM48-348 | K7766 | BRITISH STANDARDS INSTITUTION |