The VSSC-125-PF Pipe to Fitting Self-Seal Coupling is manufactured from (white) high impact polystyrene and has a free area of 11,462mm² (Pipe Side) to 10,533mm² (Fitting Side). The VSSC-125-PF incorporates a gasket to reduce air leakage to an absolute minimum in connections between PL125 system ducting and PL125 fittings.