3679-10455
Plug — 37-Degree JIC Flare Fitting
Mack

This Plug is designed for sealing a 37-degree JIC flare port when the line is not in service or during system maintenance. The 37-degree flare fit provides a tight, metal-to-metal seal that resists leakage under high pressure and temperature, making it suitable for hydraulic and fuel line applications found on heavy trucks. Precision-machined surfaces ensure consistent seating and predictable sealing performance across service cycles. The plug helps preserve system cleanliness by preventing contamination from entering exposed lines and ports during work, and it supports rapid reconfiguration when service requirements change. It is a compact, reusable component that reduces the need for full-line replacements during field repairs. Source One Parts Center.