Most of the time, Nylon tends to be tough semi-crystalline materials with good thermal and chemical resistance. It can resist most chemicals except strong acids, alcohols, and alkalis, also wear-proof and resists sunlight, weathering, and natural nasties. Nylon is a strong and durable material. Even though nylon is waterproof, water molecules can’t easily penetrate its surface, it still will absorb moisture from the surrounding environment easily, which may affect its dimensional stability and strength, while the impact resistance and flexibility will be improved. Temperature, crystallinity and the thickness of nylon parts will have an impact on the moisture content. Nylon may be blended with other engineering plastics to improve certain properties.