Value Collection ZMSCQH70330 O-ring Dash 330 Nbr

Product Description

The VALUE COLLECTION ZMSCQH70330 is a Dash 330 O-ring with an X-profile cross section, manufactured from Nitrile Butadiene Rubber (NBR). It measures 2.125 inches inside diameter, 2.500 inches outside diameter, and 0.1875 inches thick. The X-profile, also called a quad-ring or four-lobed cross section, provides improved sealing contact over standard round-profile O-rings, reducing spiral twist and improving stability in dynamic applications. NBR material offers good resistance to petroleum-based fluids, hydraulic oils, and fuels, making it a common choice in plumbing, HVAC, and fluid-system sealing applications. Licensed plumbers, HVAC technicians, and fluid-system mechanics typically install this type of seal.

This O-ring is suited for static and low-speed dynamic sealing applications where petroleum-based fluids, water, or hydraulic media are present. Typical installations include pump housings, valve bodies, cylinder heads, and pipe connections in residential and light commercial plumbing, HVAC refrigerant and oil circuits, and hydraulic equipment. The NBR compound performs reliably across a broad temperature range, making it appropriate for indoor mechanical systems. Sold in a package quantity of 10, this part supports service technicians stocking replacement seals for routine maintenance work.

Key Features

• X-profile cross section reduces spiral twist and provides four sealing lobes for improved surface contact
• Nitrile Butadiene Rubber (NBR) compound resists petroleum-based oils, hydraulic fluids, and water
• 2.125 inches inside diameter and 2.500 inches outside diameter for precise groove fitment
• 0.1875 inches thickness conforms to Dash 330 dimensional standard
• Package quantity of 10 supports maintenance inventory and bulk service calls

Compatibility

Designed as an OEM-style replacement or service seal for applications requiring a Dash 330 X-profile NBR O-ring in static or dynamic fluid-sealing assemblies.

Installation Notes

Installation should be performed by a qualified plumber, HVAC technician, or mechanical tradesperson familiar with seal replacement procedures. Depressurize and drain the system completely before removing the old seal to prevent fluid discharge and injury. Inspect the groove and mating surfaces for nicks or corrosion before installing the new O-ring, and apply a compatible lubricant to ease installation and reduce the risk of tearing the seal. Do not roll or twist the O-ring during installation; seat it evenly around the full circumference of the groove.