The JIC 37° plug with internal UNF thread is a reliable solution designed for secure and leak-free sealing in hydraulic and pneumatic systems. Engineered to seal directly on the internal 37° cone, it ensures precise fit and long-lasting performance even under demanding operating conditions. Manufactured from high-quality carbon steel and finished with a durable galvanization layer, the plug offers excellent resistance to corrosion, mechanical wear, and environmental factors, extending the service life of the entire installation. Its robust construction guarantees dependable performance in high-pressure applications, while the standardized UNF thread ensures compatibility with a wide range of system components. Easy to install and remove, the plug provides a practical and cost-effective way to protect hydraulic circuits, prevent contamination, and maintain system integrity. Designed for industries where reliability and safety are paramount, such as construction, agriculture, and heavy machinery, this plug combines strength, precision, and durability, making it an essential component for professionals seeking efficient and maintenance-friendly solutions.