Value Collection ZMSCH70259 O-ring Dash 259 Nitrile

Product Description

The VALUE COLLECTION ZMSCH70259 is a Dash 259 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It measures 6.25 inches inside diameter, 6.5 inches outside diameter, and 0.125 inches thick with a round cross section. Rated at 70 Shore A hardness, this O-ring delivers excellent resistance to petroleum-based fluids along with strong compression set, tear resistance, and abrasion resistance. It conforms to SAE and MIL-Spec standards. HVAC technicians, plumbers, and industrial service professionals install this type of seal in pumps, valves, pipe fittings, and fluid system components.

This O-ring is suited for residential and commercial applications involving petroleum products, hydraulic fluids, and general fluid system sealing. Its operating temperature range of -40 degrees F to 250 degrees F makes it appropriate for a wide variety of mechanical and fluid handling environments. It is commonly used in pump housings, valve bodies, manifolds, and threaded fittings where a reliable static or dynamic face seal is required. Each package contains 10 O-rings with a minimum order quantity of 1.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction with excellent petroleum product resistance
• 70 Shore A hardness rating for reliable compression sealing
• Operating temperature range: -40 degrees F to 250 degrees F
• Round cross section, Dash 259 sizing standard
• Meets SAE and MIL-Spec standards
• Should not be stored in direct sunlight or near motors or electrical equipment that may generate ozone

Compatibility

Compatible with petroleum products and petroleum-based fluids. Designed as a standard Dash 259 O-ring replacement for use in pumps, valves, fittings, and fluid system assemblies requiring a 6.25-inch ID seal.

Installation Notes

Installation should be performed by a qualified technician familiar with fluid system sealing practices. Depressurize and drain the system before removing the old O-ring. Inspect the groove and mating surfaces for damage or debris before seating the new O-ring. Lightly lubricating the O-ring with a compatible fluid can aid installation and help prevent damage during assembly.