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Ten brass flare caps with black O-rings, 1/4 inch flare fitting

BFKK

BFKK 1/4 Flare Cap Brass Neoprene O-Ring 10 PCS

SKU CH-Q6HE-SPH6D

Ten brass flare caps with neoprene O-rings seal 1/4 copper tubing on HVAC systems

  • 10-piece pack with neoprene O-rings for leak-free HVAC sealing
  • Brass construction resists corrosion in harsh refrigerant environments
  • 7/16-20 UNF threads fit 1/4 flare fittings precisely
  • Chloroprene rubber seals maintain integrity under pressure and temperature swings
  • Suitable for residential and commercial HVAC maintenance tasks

1/4 Flare Cap 10 Pack Brass

This pack supplies ten brass flare caps each fitted with a neoprene O-ring for HVAC valve sealing. The caps suit 1/4 inch copper tubing and use 7/16-20 UNF threads for a secure fit. They are intended for refrigerant locking and general HVAC system protection in residential or commercial work.

Installation and Common Issues

The caps thread onto 1/4 flare fittings by hand and tighten with a wrench; the integrated O-ring seats automatically to block leak paths. Over-tightening can strip the soft brass threads or damage the neoprene seal. Dirt on the flare face or a misaligned O-ring are the usual causes of persistent leaks after fitting.

Compatibility Checks

Verify that the service ports or tubing ends are 1/4 inch flare with 7/16-20 UNF threads before ordering. Confirm the system refrigerant is compatible with neoprene sealing material. Ensure the operating pressure and temperature range of the installation fall within standard brass flare-cap limits.

Highlights

  • 10-piece pack with neoprene O-rings for leak-free HVAC sealing
  • Brass construction resists corrosion in harsh refrigerant environments
  • 7/16-20 UNF threads fit 1/4 flare fittings precisely
  • Chloroprene rubber seals maintain integrity under pressure and temperature swings
  • Suitable for residential and commercial HVAC maintenance tasks

Specifications

No published specifications for this item yet.

Questions about this item

How can I confirm the 1/4 flare caps seal properly after installation?

Tighten each brass cap onto the 7/16-20 UNF threads until the neoprene O-ring compresses fully, then pressure-test the HVAC line; zero pressure drop confirms a leak-free seal.

What does the 10-piece pack include and what must I supply separately?

The pack supplies ten brass 1/4 flare caps with neoprene O-rings installed; you must provide the 1/4 copper tubing and any required flare-nut tools.

Which version suits a standard 1/4 HVAC service port?

Choose the listed 1/4 flare cap with 7/16-20 UNF threads — it matches the common 1/4 SAE flare fitting used on residential and commercial refrigerant lines.

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