Value Collection BD-C30598 O-ring 18 in Id Nbr 25-pack

Product Description

The VALUE COLLECTION BD-C30598 is a nitrile butadiene rubber (NBR) O-ring with an 18-inch inside diameter and a 3-inch cross-section thickness. The round cross-section profile seats evenly in standard O-ring grooves, providing reliable static or dynamic sealing in fluid and pneumatic systems. With a durometer rating of 70, the compound offers a balance of flexibility and compression resistance suited to oil, fuel, and water service. This size is typically handled by licensed plumbers, pipefitters, or maintenance mechanics working on large-bore piping, pump housings, or industrial fluid-handling equipment.

This O-ring is appropriate for large-diameter sealing applications in commercial and industrial settings, including pump flanges, valve bonnets, manifolds, and pipe couplings where a resilient NBR seal is required. NBR material performs well in petroleum-based fluid environments as well as water and mild chemical service. Each package contains 25 O-rings, making it practical for shops and service fleets that replace seals on a regular maintenance schedule.

Key Features

• 18-inch inside diameter for large-bore sealing applications
• 3-inch cross-section thickness provides substantial sealing contact area
• Nitrile butadiene rubber (NBR) material resists petroleum-based fluids, water, and mild chemicals
• 70 durometer hardness balances flexibility with compression resistance
• Round cross-section seats uniformly in standard O-ring grooves
• Sold in a 25-piece package to support recurring maintenance needs

Compatibility

Designed as a general-purpose NBR O-ring for large-bore static and dynamic sealing in industrial plumbing, pump, and fluid-handling systems where an 18-inch ID and 3-inch cross-section are specified.

Installation Notes

Installation should be performed by a qualified plumber, pipefitter, or mechanical technician. Always depressurize and drain the system fully before removing any existing seal or disassembling flanged connections. Inspect the mating groove and sealing surfaces for nicks, corrosion, or debris before fitting the new O-ring. Lubricate the O-ring with a compatible fluid or assembly lubricant to prevent tearing during installation and to assist proper seating.