Connecting People with Success Since 1975 – NSI’s core philosophy is Making Connections. The driving force behind market-leading brands and products, NSI’s primary job for over 45 years has been to fulfill the needs of distributors. By staying grounded in the principles of service and value, NSI continues to deliver high-quality, industry-advancing, and comprehensive product solutions. NSI has many well-respected brands, including Bridgeport Fittings®, Polaris®, TORK®, and WarriorWrap®, and we’re still growing.