Viega 3/4" Dull Black Sealing Element

The Viega 3/4" Dull Black Sealing Element (MPN 17778) is a precision FKM sealing component engineered for use with Viega ProPress CTS size fittings. This sealing element serves as a critical interface in press-fit plumbing systems, where it creates a water-tight seal between coupling components without the need for solder or flux. The dull black finish indicates a standard-duty elastomer construction designed to withstand typical potable water and hydronic heating applications.

The 3/4" sizing corresponds to the nominal pipe diameter for CTS (Copper Tube Size) plumbing systems, a standard used in residential and light commercial installations. FKM (fluoroelastomer) material provides chemical resistance and temperature stability across typical operating ranges found in modern plumbing systems. The sealing element is a wear item in press-fit assemblies—when connections are depressed during installation, the elastomer deforms to seal the mating surfaces. Replacement sealing elements ensure that older or damaged fittings can be restored without replacing the entire fitting body, making this a cost-effective maintenance component for contractors and service technicians.

This component is essential for plumbers maintaining Viega ProPress systems in the field, or for supply houses stocking replacement parts for emergency service calls. It is not a standalone product but part of the larger ecosystem of Viega press-fit technology, which has become standard in new construction and retrofit plumbing work where speed and reliability are priorities. The compact 1 x 1 x 1 inch profile makes storage and transport straightforward for jobsite use.

Available now at TacticalSurplusUSA with full manufacturer specification support and fast shipping for contractors and plumbing professionals who need reliable replacement sealing elements in stock.