Ever-tite. Coupling Products 315GSKBUMS O-ring Dash 315 Nbr

Product Description

The EVER-TITE. COUPLING PRODUCTS 315GSKBUMS is a Dash 315 square-cross-section O-ring manufactured from Nitrile Butadiene Rubber (NBR), also known as Buna-N. It measures 1.625 inches inside diameter, 2.188 inches outside diameter, and 0.25 inches thick. The square cross-section profile provides a larger sealing contact area compared to a round-cross-section ring, making it well-suited for static face-seal and groove applications. The NBR compound offers reliable resistance to petroleum-based fluids across a wide service temperature range of -40 degrees F to 212 degrees F. Plumbers, HVAC technicians, and mechanical contractors install this type of seal in fluid-handling assemblies where a durable, chemical-compatible gasket is required.

This O-ring is designed for use in plumbing, HVAC, refrigeration, and general industrial fluid systems where petroleum-based media compatibility is required. The square cross-section geometry makes it particularly effective in flat-face flange connections and cap-seal grooves. At nominal size 1-1/2 inches, it fits standard groove dimensions for Dash 315 O-ring applications. It is sold individually per package with a minimum order quantity of 5 units, making it appropriate for service stock or multi-unit repair kits.

Key Features

• Square cross-section profile increases sealing surface contact for static face-seal applications
• Nitrile Butadiene Rubber (Buna-N) compound rated compatible with petroleum products
• Wide service temperature range: -40 degrees F to 212 degrees F
• Standard Dash 315 sizing for drop-in replacement in matching groove specifications
• Black color for easy identification in standard NBR O-ring applications
• Lightweight at 0.018 pounds per unit, suitable for high-quantity service stock

Compatibility

Designed for static sealing applications requiring a Dash 315 square-cross-section NBR O-ring compatible with petroleum-based fluids and media.

Installation Notes

Shut off and depressurize the system fully before removing or replacing any O-ring or gasket seal. Clean the mating groove and sealing surfaces of debris, old sealant, and fluid residue before installing the new ring. Do not twist or roll the O-ring during installation, as this can compromise the seal. A light coat of compatible lubricant applied to the ring before seating is standard practice for static groove installations.