SIAMP 34951309 Diaphragm Washer, Black

Zoro Tools

Popular replacement washer to suit all Siamp side and bottom supplied inlet valves Used by many leading manufacturers over the years including Twyfords, Roca and Vitra, and supplied installed within many DIY stores toilet cisterns

Amazon

For use with Siamp inlet valves Replacement for worn diaphragm washer Easy replacement without disconnecting from the water supply Manufactured from NBR 55 Sh, Manufacturer: SIAMP