Parker BD-KP4370 Brass Compression Ferrule 3/8 in Od 10pk

Product Description

The PARKER BD-KP4370 is a brass compression tube ferrule designed for use in compression-style tube fittings. The ferrule forms a leak-resistant seal when the compression fitting is tightened, biting into the outer surface of the tubing and creating a pressure-tight mechanical connection. Constructed from brass, it offers solid corrosion resistance in typical plumbing, HVAC, and fluid-system applications. This ferrule fits tubing with a 3/8 inch outside diameter. It is sold in a package of 10 pieces, making it practical for service technicians who need to carry spares or complete multiple connections on a single job.

Brass compression ferrules are used across a wide range of trade applications, including residential and light commercial plumbing, HVAC refrigerant and water line connections, and instrumentation tubing. They are typically installed where a reusable, tool-friendly mechanical connection is preferred over soldered or crimped joints. Technicians working on copper or compatible soft-metal tubing with a 3/8 inch OD will find this ferrule appropriate for standard compression fitting assemblies.

Key Features

• Brass construction provides corrosion resistance in plumbing and HVAC fluid systems
• Designed for tubing with a 3/8 inch outside diameter
• Compression-style design requires no soldering or special crimping tools
• Pack of 10 ferrules supports multi-connection jobs or service inventory
• Compatible with standard compression fitting bodies used in tubing assemblies

Compatibility

Designed as an OEM-style replacement ferrule for standard compression tube fitting assemblies using 3/8 inch OD tubing.

Installation Notes

Compression ferrules are typically installed by licensed plumbers or HVAC technicians following applicable IPC or IFGC guidelines. Shut off and depressurize the fluid line before disassembling or replacing any compression fitting components. Seat the ferrule squarely on the tubing before threading the compression nut to avoid cross-threading or uneven bite. Do not over-tighten the compression nut, as excessive force can deform the ferrule and compromise the seal.