https://fratco.com/catalog/fittings/slip-end-caps/
Slip End Caps - Fratco
Oct 3, 2025 - Shop Fratco's Slip End Caps, a quality product from your trusted HDPE and HDPP corrugated pipe manufacturer.
end capsslipfratco
https://fratco.com/tried-and-true/general-editorial/beyond-the-rubber-ring/
Beyond the Rubber Ring - Fratco
Apr 29, 2026 - For many years, watertight joints in corrugated HDPE pipe relied on a simple idea: compress a solid rubber gasket between the spigot and the bell. It worked...
beyond therubberringfratco