FlareSeal 3/8" SAE Flare Seal Gaskets — 10 Pack FS06, Coated Copper Multi-Ring Leak-Resistant

FlareSeal® 3/8" is a clip-on engineered copper flare gasket that creates a reliable, leak-resistant seal for 3/8" SAE flare fittings in refrigeration, HVAC, ductless mini-splits and Schrader valve applications.

Designed as a simple retrofit or assembly component, this 10-pack of FlareSeal FS06 gaskets combines a multi-ring flare face with a full copper base coated in a leakproof finish. The dual features let the gasket compensate for minor surface scratches, slight misalignment and common installation imperfections so you get a tight, durable seal without re-machining or complex work. FlareSeal is made to slip over the male flare, clip into place, and work with standard brass flare caps or fittings to form a crush-style seal.

How does FlareSeal stop leaks at a 3/8" flare connection?

The multi-ring geometry creates multiple contact points around the flare shoulder, while the coated copper material fills microscopic gaps and prevents refrigerant or gas seepage. It’s engineered to deform predictably under the clamping force of a flare nut or cap, producing a consistent sealing surface even on imperfect flares.

• Multi-ring flare face for staged compression and multiple contact lines
• Coated copper base metal that fills scratches and surface irregularities
• Clips onto male flare for quick placement before tightening
• Works with standard brass caps, nuts and Schrader-style fittings

Can I use FlareSeal on existing leaking fittings or only new installations?

FlareSeal was built to be effective in both repair and new-install scenarios. For a leaking joint, simply clip the gasket onto the male flare, re-seat the cap or nut, and torque to specification—often eliminating leaks caused by minor damage or misalignment without replacing the tubing or re-flaring.

• Quick retrofit for existing leaks—no re-machining required
• Compatible with common HVAC components like filter driers and valves
• Useful for Schrader valve leaks when paired with the compatible brass cap
• Saves time on service calls by avoiding full system disassembly

What fittings and systems is the 3/8" FlareSeal FS06 compatible with?

The FS06 3/8" size is sized for standard SAE 45° flare connections found across refrigeration and HVAC equipment. Typical uses include mini-splits, VRV/VRF systems, pilot lines, thermostatic expansion valves, evaporator pressure regulators and many Schrader valve assemblies.

• 3/8" SAE 45° male flare fittings (refrigeration and HVAC lines)
• Ductless mini-split and VRV/VRF installations and service jobs
• Pilot lines, oil filter connections, TXV and EPR ports
• Schrader valves when used with the matching brass flare cap

How do I install a FlareSeal FS06 gasket properly?

Installation is fast: slide the FlareSeal over the male flare until it clips into place, align the mating flange, then tighten the cap or flare nut to normal torque. Avoid over-torquing—FlareSeal is designed to form a crush seal under standard tightening practices.

• Clip the gasket onto the male flare, ensuring full seating
• Align female fitting or cap and begin hand-threading
• Tighten to recommended torque; do not use extreme force
• Verify with a leak check after installation

Who is this for? FlareSeal FS06-10PK is intended for HVAC technicians, refrigeration service professionals, installers of ductless mini-splits and DIYers working on gas or refrigerant lines who need a practical, time-saving solution for preventing or repairing flare leaks. The 10-pack format is suitable for small service kits or van stock, while the engineered design addresses common field issues—scratches, minor misalignment and aging connections—without requiring costly rework.

Features:

• Easy installation — clips onto male flare for quick placement
• Eliminates flare leaks in both existing fittings and new systems
• Available in several sizes to match SAE 45° flare connections
• Trusted by OEMs for leak-free equipment and field servicing