Value Collection ZMSCQH70129 O-ring Dash 129 Nbr X Cross Section

Product Description

The VALUE COLLECTION ZMSCQH70129 is a Dash 129 O-ring with an X-profile (quattro) cross section, manufactured from Nitrile Butadiene Rubber (NBR). It measures 1.5630 inches inside diameter, 1.7500 inches outside diameter, and 0.0937 inches thick. The X cross section provides four-point contact sealing, which reduces spiral twist and improves stability in dynamic or static groove applications. NBR compound offers solid resistance to petroleum-based oils, fuels, and hydraulic fluids. This O-ring is installed by HVAC technicians, plumbers, and mechanical service professionals wherever a reliable fluid or gas seal is required in compatible grooved fittings and assemblies.

This O-ring is suited for use in residential and light commercial HVAC systems, plumbing assemblies, hydraulic circuits, and general industrial equipment where Dash 129 sizing is specified. The NBR material performs reliably in applications involving petroleum-based media, water, and many common refrigerants. Sold in packages of 25, making it practical for service contractors who need on-hand stock for routine maintenance and repair work.

Key Features

• X-profile (quattro) cross section reduces spiral twist in dynamic sealing applications
• NBR compound resists petroleum-based oils, fuels, and hydraulic fluids
• Dash 129 sizing: 1.5630 inches ID, 1.7500 inches OD, 0.0937 inches thick
• Four-point contact provides improved groove stability compared to round cross sections
• Package quantity of 25 suits stock-and-carry service use

Compatibility

Designed as an OEM-style replacement O-ring for Dash 129 groove specifications in HVAC, plumbing, hydraulic, and general mechanical assemblies requiring an X cross section NBR seal.

Installation Notes

Installation is performed by licensed HVAC technicians, plumbers, or qualified mechanical service personnel. Depressurize and isolate the system before removing the existing O-ring. Apply a light coat of compatible lubricant to the O-ring before seating it in the groove to prevent pinching or tearing during assembly. Inspect the groove for nicks or scoring that could compromise the seal before installing the new O-ring.