The document describes IP68 sealed fittings for non-metallic conduit systems. The fittings have integrated elastomer seals that guarantee a fit and cannot be assembled incorrectly. They are rated IP68 for protection against long periods of immersion under pressure and IP6x for protection against dust. The fittings are made from flame retardant and heat stabilized nylon 6,6 and TPV elastomers. They have passed tests for mechanical properties, thermal properties, and flammability, smoke and toxicity. The document also provides information on the chemical resistance of the nylon body and TPV seals.