O-Ring Set for Seat Bush for Type 57A butterfly valves (DN40-350) and Type 57L lug butterfly valves (DN80-250). Nominal sizes DN40 to DN350; part numbers by O-Ring EPDM, FKM, FKM-F, FKM-C, CSM, NBR.
| Type | O-Ring Set for Seat Bush |
| Applicable Valves | Type 57A butterfly valves (DN40-350) and Type 57L lug butterfly valves (DN80-250) |
| Size | DN 40, 50, 65, 80, 100, 125, 150, 200, 250, 300, 350 |
| O-Ring Material | EPDM, FKM, FKM-F, FKM-C, CSM, NBR |
| Part Numbers (O-Ring EPDM) | DN40 S57OSE040 / DN50 S57OSE050 / DN65 S57OSE065 / DN80 S57OSE080 / DN100 S57OSE100 / DN125 S57OSE125 / DN150 S57OSE150 / DN200 S57OSE200 / DN250 S57OSE250 / DN300 S57OSE300 / DN350 S57OSE350 |
| Part Numbers (O-Ring FKM) | DN40 S57OSV040 / DN50 S57OSV050 / DN65 S57OSV065 / DN80 S57OSV080 / DN100 S57OSV100 / DN125 S57OSV125 / DN150 S57OSV150 / DN200 S57OSV200 / DN250 S57OSV250 / DN300 S57OSV300 / DN350 S57OSV350 |
| Part Numbers (O-Ring FKM-F) | DN40 S57OSF040 / DN50 S57OSF050 / DN65 S57OSF065 / DN80 S57OSF080 / DN100 S57OSF100 / DN125 S57OSF125 / DN150 S57OSF150 / DN200 S57OSF200 / DN250 S57OSF250 / DN300 S57OSF300 / DN350 S57OSF350 |
| Part Numbers (O-Ring FKM-C) | DN40 S57OSC040 / DN50 S57OSC050 / DN65 S57OSC065 / DN80 S57OSC080 / DN100 S57OSC100 / DN125 S57OSC125 / DN150 S57OSC150 / DN200 S57OSC200 / DN250 S57OSC250 / DN300 S57OSC300 / DN350 S57OSC350 |
| Part Numbers (O-Ring CSM) | DN40 S57OSH040 / DN50 S57OSH050 / DN65 S57OSH065 / DN80 S57OSH080 / DN100 S57OSH100 / DN125 S57OSH125 / DN150 S57OSH150 / DN200 S57OSH200 / DN250 S57OSH250 / DN300 S57OSH300 / DN350 S57OSH350 |
| Part Numbers (O-Ring NBR) | DN40 S57OSN040 / DN50 S57OSN050 / DN65 S57OSN065 / DN80 S57OSN080 / DN100 S57OSN100 / DN125 S57OSN125 / DN150 S57OSN150 / DN200 S57OSN200 / DN250 S57OSN250 / DN300 S57OSN300 / DN350 S57OSN350 |