Pull Cap, 1″, Polyethylene for Conduit and Bushing Capping
https://testing.nsiindustries.com/product/pull-cap-1-polyethylene-for-conduit-and-bushing-capping/
The Bridgeport 1″ Polyethylene Pull Cap for capping rigid, EMT, IMC conduits and most bushings is impact and corrosion-resistant for a long-lasting fit.