Value Collection BDNA-9307 O-ring 7 in Id 11 in Od Nbr

Product Description

The VALUE COLLECTION BDNA-9307 is a nitrile butadiene rubber (NBR) O-ring with a round cross section, designed for static and dynamic sealing applications across a wide range of industrial and mechanical systems. With a 7-inch inside diameter, 11-inch outside diameter, and 2-inch thickness, this is a large-format seal suited for flanged connections, pump housings, valve bodies, and similar assemblies where a reliable, chemical-resistant elastomeric seal is required. NBR compounds offer strong resistance to petroleum-based oils, fuels, and hydraulic fluids, making this O-ring a practical choice for fluid-handling and mechanical sealing work.

This O-ring is appropriate for use in plumbing, HVAC, industrial fluid systems, and pump maintenance applications where large-diameter face or radial seals are needed. Its metric-dimensioned profile suits equipment manufactured to metric specifications. Technicians and maintenance professionals working on large pumps, tank fittings, manifold assemblies, or flanged pipe connections will find this size applicable to demanding sealing scenarios that require a durable NBR compound.

Key Features

• Nitrile butadiene rubber (NBR) construction resists petroleum oils, fuels, and hydraulic fluids
• Round cross section provides consistent sealing contact and even compression
• Large-format dimensions: 7-inch ID, 11-inch OD, 2-inch thickness for heavy-duty sealing applications
• Suitable for both static face seals and dynamic sealing environments
• Metric-dimensioned profile compatible with metric-spec equipment and fittings

Compatibility

Designed as a general-purpose replacement or maintenance O-ring for large-diameter sealing applications in industrial fluid systems, pump assemblies, valve bodies, and flanged connections requiring a 7-inch ID by 11-inch OD NBR seal.

Installation Notes

Installation should be performed by a qualified technician. De-pressurize and drain the system before removing the existing seal to prevent fluid release or injury. Inspect the seating groove for wear, scoring, or contamination before installing the new O-ring. Apply a compatible lubricant to the O-ring during installation to prevent pinching or tearing, and ensure the ring seats evenly without twisting in the groove.