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The VALUE COLLECTION BDNA-9332 is a large-diameter nitrile butadiene rubber (NBR) O-ring with a round cross section, designed for static and dynamic sealing applications in fluid and pneumatic systems. It measures 12 inches inside diameter, 17 inches outside diameter, and 2.5 inches thick. NBR compound provides reliable resistance to petroleum-based oils, fuels, and many hydraulic fluids, making it a practical choice for plumbing, HVAC, and industrial sealing tasks where hydrocarbon exposure is a factor. Licensed plumbers, pipefitters, and mechanical technicians commonly install seals of this type during assembly or preventive maintenance service.
This O-ring suits large-bore sealing applications including pump housings, valve bodies, large-diameter pipe flanges, and industrial equipment covers. Its metric-normalized dimensions (inside diameter 304.8 mm nominal, outside diameter 431.8 mm nominal, cross section 63.5 mm nominal) align with both inch-dimensioned and metric system assemblies. Typical install scenarios include commercial plumbing, hydronic heating systems, and industrial fluid handling where a robust NBR seal is specified. Sold individually; minimum order quantity is 50 units.
Designed as an OEM-style replacement or maintenance seal for large-bore pump housings, valve bodies, flanged connections, and industrial equipment covers requiring a nitrile rubber O-ring of this cross-section profile.
Installation should be performed by a licensed plumber, pipefitter, or qualified mechanical technician following applicable IPC or facility maintenance procedures. Depressurize and drain the system fully before removing the old seal or seating the new O-ring. Inspect the groove for nicks, corrosion, or debris that could compromise the seal surface. Avoid twisting the O-ring during installation; light application of a compatible lubricant helps seat the ring without distortion.
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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