The 3 Cap Nut from Fittings Unlimited Inc is a versatile component designed for sealing and securing connections in fluid systems. With a 3mm size, this cap nut is perfect for applications requiring a tight seal to prevent leaks. Constructed from high-quality materials, it offers excellent resistance to corrosion and wear, ensuring durability over time. This cap nut is compatible with various fittings and is easy to install, making it an essential part of any plumbing or fluid transfer system. It meets industry standards for quality and reliability, making it a trusted choice for professionals.