Crafted from black anodized aluminum, this fitting features dual sealing systems: a 37° flare connection on one side and 60° tapered NPT threads on the other. Important Note: For leak-proof performance at the NPT connection, application of thread sealant or PTFE tape is essential. The fitting demonstrates excellent compatibility with multiple fluids including engine oils, coolants, transmission fluids, air, water, alcohol blends (including E85 and methanol). Designed for critical applications in fuel systems, turbo setups, cooling systems, and fuel tanks. Professional Note: Installation requires technical expertise - professional assembly is strongly advised as no installation instructions are provided.