Duraflex Sanitation Products include a smart line of sewer hoses and fittings for RVs. The home of a wide selection of products for RV sanitation. With these durable products, you can keep your RV's drain hose system secure while you keep your costs down. Duraflex is designed to work with most commonly-used accessories found on today's RVs. And Duraflex is easy to find all across North America.