This Blucher 45 deg wye is manufactured from 316 stainless steel. It features 4 x 2 in push-fit socket connections with EPDM sealing rings and is treated with a pickling and passivation finish process. – (838.050.110 S, 838050110S, W4x2-45-316, W4x245316) EPDM Sealing rings https://wattsdev.azureedge.net/Dmm3BWSV3/assetstream.aspx?assetid=33003&mediaformatid=50040&destinationid=10010&accesskey=477437cf-746b-4e85-bb54-c07510d2efc3