Value Collection ZMSCN70004 Neoprene O-ring Dash 004

Product Description

The VALUE COLLECTION ZMSCN70004 is a Dash 004 neoprene O-ring designed for static and dynamic sealing applications across HVAC, refrigeration, plumbing, and general mechanical systems. With an inside diameter of 0.0781 inches, an outside diameter of 0.2030 inches, and a cross-section thickness of 0.0625 inches, this is a small-profile ring suited for tight-tolerance fittings and compact assemblies. The round cross-section profile provides consistent compression and reliable sealing contact. Hardness is rated at 70 Shore A, placing it in the hard range for firm, stable seating under pressure. Licensed technicians and service pros working on refrigeration circuits or fluid handling systems install these during routine maintenance, component rebuilds, or system commissioning.

This O-ring is commonly used in refrigeration and HVAC applications where resistance to Freon and similar refrigerants is required. The neoprene compound also performs well in applications involving moderate petroleum product exposure, outdoor environments, and systems subject to ozone degradation. Typical install scenarios include compressor fittings, valve bodies, flare adapters, and small-bore fluid connections. The 100-piece pack quantity supports service shops and technicians who replace O-rings as consumables during system service calls or preventive maintenance routines.

Key Features

• Neoprene compound rated for use with Freon and refrigeration fluids
• Dash 004 standard sizing with 0.0781 inch ID and 0.2030 inch OD
• Round cross-section for consistent compression and sealing contact
• 70 Shore A hardness for firm, stable seating in tight-tolerance grooves
• Operating temperature range of -65 degrees F to 250 degrees F
• Moderately resistant to petroleum products with good ozone and weather resistance

Compatibility

Designed for use in refrigeration and HVAC fluid circuits requiring a Dash 004 neoprene O-ring with a round cross-section; compatible with Freon-based refrigerants as noted in the product specifications.

Installation Notes

O-rings of this size are typically installed by licensed HVAC technicians or refrigeration mechanics during system service, valve replacement, or fitting assembly. Always depressurize and recover refrigerant from the system before replacing O-rings in any refrigerant circuit, in accordance with EPA Section 608 requirements. Inspect the seating groove for burrs or debris before installation to avoid damage to the O-ring sealing surface. Do not over-compress the ring during assembly, as excess deformation will reduce service life and sealing performance.