HVAC technicians and DIY plumbing enthusiasts, this 4-piece set of solid brass flare cap plugs is exactly what you need for professional-grade line sealing! The pack includes 2 female flare caps and 2 male flare plugs specifically designed for 3/8\ OD tubing - perfect for refrigeration systems, LPG propane gas lines, air conditioning units, and various plumbing applications. The 45-degree cone seal design creates a leak-proof connection that you can trust for both temporary capping during repairs and permanent installations. Made from high-quality solid brass, these fittings resist corrosion and stand up to the demands of both residential and commercial systems. The hexagonal shape makes installation straightforward - just use a standard wrench to tighten them securely. The thread size is 5/8-18 UNF, which is standard for 3/8\ flare fittings, so they're compatible with most systems you'll encounter. What's really useful is having both male and female options in one set - you're prepared for whatever connection type your project requires. The machining quality is excellent with smooth threads and no rough edges that could damage your tubing. Whether you're working on RV propane systems, home refrigeration, automotive applications, or industrial plumbing, having reliable flare caps like these on hand prevents leaks and protects your systems from contamination. They're one of those essential fittings that every serious DIYer or professional should have in their toolkit for those moments when you need to cap off a line securely and professionally.
Free 30-day returns 
Free 30-day returns
