C564-20a Standard Specification for Rubber Gaskets for Cast Iron Soil Pipe and Fittings
C1173-22 Standard Specification for Flexible Transition Couplings for Underground Piping Systems
- See also WK88101 proposed revision
- See also WK88465 proposed revision
WK82321 Standard Specification for special stainless steel shielded, rubber gasketed couplings having an integral restraint feature for joining hubless cast iron soil pipes and fittings where external restraint is needed.
WK82034 Standard Specification for Thermoset Rubber Gaskets for use in Shielded Couplings used to join Hubless Cast Iron Soil Pipes and Fittings