Type WNN is a winter-grade Type NN.is a clean, slow-drying, silicone-based cable pulling lubricant. Type NN offers superior friction reduction and is ideally suited for use with silicone-lined and prelubed duct. Non-stringy Type NN pours and pumps easily, and is suitable for use with all common* cable jacket types. Research has shown that Type NN out performs all other lubricants in water-filled ducts. Type NN is the correct choice for pulling cable in wet environments.