

Ships same day if ordered by 12 pm
Manufacturer pricing rules prevent us from advertising our discount — no account or email required to see it.
Secure Payments
Easy Returns
Expert Advice
Fast Shipping
The VALUE COLLECTION BD-C30549 is a Nitrile Butadiene Rubber (Buna-N) O-ring with a 9-inch inner diameter and a 2-inch cross-section thickness. Buna-N is a widely used elastomer known for its resistance to oils, fuels, hydraulic fluids, and water, making it a dependable sealing material across a broad range of industrial and trade applications. The round cross-section profile seats reliably in standard O-ring grooves, providing consistent radial or face-seal compression. Plumbers, HVAC technicians, and industrial maintenance professionals install this size of O-ring in large-diameter valve bodies, pump housings, and fluid system flanges where a robust static or dynamic seal is required.
This O-ring is suited for use in large-format plumbing assemblies, industrial fluid handling equipment, hydraulic systems, and pump seal applications. Its Buna-N material is compatible with petroleum-based oils, water, and many common refrigerants and hydraulic fluids. The 9-inch inner diameter targets mid-to-large diameter pipe flanges, valve seats, and equipment covers found in commercial and light industrial settings. Sold in a package quantity of 50, this O-ring is appropriate for contractors or maintenance shops that service multiple units or want to stock a serviceable quantity on hand.
Designed as a standard-profile replacement O-ring for large-diameter fluid system components requiring a 9-inch ID Buna-N seal with a 2-inch round cross section.
Installation is performed by licensed plumbers, HVAC technicians, or qualified industrial maintenance personnel. De-pressurize and fully isolate the fluid system before removing the existing O-ring. Clean the groove surface and inspect for wear or scoring before seating the new O-ring. Apply a compatible O-ring lubricant to ease installation and avoid twisting or rolling the ring during assembly.
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.
Add install kit to cart
—
Thanks for subscribing!
This email has been registered!