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The VALUE COLLECTION BD-KP80967 is a Dash 345 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N) for use in fluid sealing applications across plumbing, HVAC, and industrial systems. It measures 4 inches inner diameter by 4-3/8 inches outer diameter with a 3/16-inch cross-section thickness and a round cross-section profile. Buna-N material provides reliable resistance to petroleum-based fluids, water, and moderate temperatures, making this O-ring a dependable choice for service technicians working on pumps, valves, fittings, and fluid handling assemblies. Each package contains 5 O-rings.
This O-ring is suited for residential and light commercial applications wherever a Dash 345 standard O-ring is required. Typical install scenarios include pump housing seals, valve body replacements, and fitting connections in plumbing and HVAC systems. The Buna-N compound performs well in contact with water, hydraulic fluids, and petroleum-based lubricants, making it a practical stock item for service vans and shop inventory. The round cross section ensures even seat compression and consistent sealing force in standard O-ring grooves.
Designed as a standard Dash 345 O-ring replacement suitable for any application specifying a 4-inch ID Buna-N O-ring with a 3/16-inch cross section in plumbing, HVAC, or fluid handling assemblies.
Installation is typically performed by licensed plumbers, HVAC technicians, or qualified maintenance personnel. Shut off and depressurize the system fully before removing the old O-ring to prevent fluid release or injury. Lightly lubricate the O-ring with a compatible lubricant before seating to reduce the risk of tearing during assembly. Ensure the groove is clean and free of debris to achieve a proper seal.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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