Value Collection 0284250 Buna-n Round Cord Stock 1/4 in 100 Ft

Product Description

The VALUE COLLECTION 0284250 is a Buna-N (nitrile rubber) round cord stock supplied in a 100-foot standard coil. This flexible elastomeric cord is used to fabricate custom O-rings, gaskets, and seals on the job or in a shop setting. At 0.25 inches in diameter with a tolerance of plus or minus 0.010 inches, it offers consistent sizing for reliable sealing applications. The material is rated for use down to -40 degrees F, making it suitable for cold-climate service environments. HVAC technicians, plumbers, and industrial maintenance trades commonly cut and join this cord stock to create seals where standard O-ring sizes are unavailable.

Buna-N cord stock is a standard material choice for sealing applications involving petroleum-based fluids, oils, fuels, and many refrigerants. It is commonly used in HVAC equipment, plumbing assemblies, hydraulic systems, and general industrial maintenance. The round cross-section allows it to seat properly in standard O-ring grooves. This 100-foot coil provides enough material for multiple fabricated seals or replacement gaskets across a range of equipment types encountered in residential and light commercial service work.

Key Features

• Buna-N (nitrile rubber) material resists petroleum-based oils, fuels, and many common refrigerants
• 0.25 inch diameter with a tight tolerance of plus or minus 0.010 inches for consistent groove fit
• 100-foot coil length provides ample material for multiple custom seals or gaskets
• Rated to -40 degrees F minimum temperature for cold-climate and low-temperature service
• Round cross-section seats correctly in standard O-ring grooves without modification
• Cut-to-length format allows fabrication of custom O-ring sizes not available as stock parts

Compatibility

Designed for general use as a cut-to-length sealing cord in HVAC, plumbing, hydraulic, and industrial maintenance applications where a 0.25 inch diameter Buna-N round cord is required.

Installation Notes

Cut cord stock to the required length using a sharp, clean blade to ensure a square, burr-free end. When joining cut ends to form a custom O-ring, use a compatible nitrile bonding cement and allow full cure time before pressurizing the assembly. Depressurize and de-energize any system before replacing seals or gaskets. Verify chemical compatibility between the Buna-N material and the specific fluid or refrigerant in the system before installation.