What is a fernco?

A fernco is a generic name given to a rubber sewer coupling. They are rubber couplings with a worm drive clamp on either side. They are used to join together two lengths of sewer pipe. It is just like calling all facial tissue "kleenex" or all frozen fruit treats "popsicles"! A fernco is a generic name given to a rubber sewer coupling. They are rubber couplings with a worm drive clamp on either side. They are used to join together two lengths of sewer pipe. It is just like calling all facial tissue "kleenex" or all frozen fruit treats "popsicles"!