FlareSeal 3/8" SAE Flare Seal Gaskets — 10-Pack Coated Copper, Clip-On Leak Repair for HVAC & Refrigeration

Designed for technicians and installers who need a quick, reliable repair or preventative seal, this multi-ring copper gasket slips onto 3/8" SAE 45° flare fittings to create a durable, crush-resistant seal. The gasket’s full-metal coating and concentric sealing rings compensate for small scratches, imperfect mating surfaces and minor alignment issues so fittings that would otherwise leak can be secured without disassembly or soldering.

How does FlareSeal stop leaks on existing flare fittings?

The FlareSeal gasket clips onto the male flare and uses its multi-ring profile and coated copper body to form a new sealing surface against the female flare. It fills gaps caused by surface damage and produces a crush-style seal when paired with a brass flare cap or tightened connection.

• Clips on quickly without special tools
• Multi-ring design redistributes sealing pressure
• Coating prevents metal-to-metal wear and improves seat
• Works with damaged or slightly misaligned flares

Will this fit Schrader valves, mini-splits, and other HVAC components?

Yes—this 3/8" size is intended for common SAE 45° flare connections found in refrigeration lines, mini-splits, pilot lines, thermostatic expansion valves, Schrader valve assemblies and filter driers. The gasket is versatile enough for new installs or field repairs.

• Compatible with Schrader valve repairs when used with a brass cap
• Suitable for ductless mini-split and VRV service lines
• Compatible with OEM-style flare fittings and many field repairs
• Available in packs sized for installers or service vans

How do I install the FlareSeal 3/8" gasket safely and quickly?

Installation is a simple clip-on process: slide the gasket onto the male flare, seat it flat, then assemble the flare connection or tighten a brass cap to form the crush seal. No cutting, soldering or special adhesives are required.

• Ensure both flare surfaces are free of loose debris
• Clip gasket onto male flare until flush against shoulder
• Tighten the flare nut or brass cap to compress the seal
• Re-check for leaks under normal system pressure after assembly

Who is this product for? FlareSeal 3/8" is built for HVAC and refrigeration service techs, field installers, and maintenance teams who require fast, reliable leak control without downtime. It’s also useful for contractors stocking service vans, facility maintenance staff dealing with small refrigerant leaks, and anyone who needs a compact, storable solution for flare sealing. The 10-pack size strikes a balance between value and portability—enough parts for multiple repairs while still convenient to carry on a job. Whether preventing leaks on a new mini-split install or stopping a persistent Schrader valve seep, this gasket is a practical tool to reduce refrigerant loss and save time on the job.

Features:

• Easy Installation - Clips onto male flare
• Eliminates flare leaks in existing or new systems
• Variety of sizes available to cover common SAE 45° flare connections
• Trusted by OEMs for reliable leak prevention