Value Collection ZMSCN70121 Neoprene O-ring Dash 121 100-pack

Product Description

The VALUE COLLECTION ZMSCN70121 is a Dash 121 neoprene O-ring with a round cross section, designed for static and dynamic sealing applications in HVAC, refrigeration, and plumbing systems. It measures 1.0625 inches inside diameter, 1.2500 inches outside diameter, and 0.0937 inches thick. With a 70 Shore A durometer hardness rating, this O-ring provides firm, reliable compression set performance. Rated for service from -65 degrees F to 250 degrees F, it handles the thermal cycling common in refrigeration and air conditioning circuits. Sold in a pack of 100, it is suited for technicians stocking parts for recurring seal replacements.

This O-ring is appropriate for residential and light commercial refrigeration, air conditioning, and plumbing systems where neoprene compound compatibility is required. Neoprene offers moderate resistance to petroleum-based fluids and good resistance to ozone and weathering, making it a practical choice for outdoor or exposed service environments. It is particularly well suited for sealing refrigeration circuits handling Freon-type refrigerants. HVAC technicians and plumbers will find this a reliable shelf-stock seal for Dash 121 groove applications.

Key Features

• Dash 121 standard sizing: 1.0625 inches ID, 1.2500 inches OD, 0.0937 inches thick
• Neoprene compound rated for Freon refrigerant compatibility
• Operating range of -65 degrees F to 250 degrees F
• 70 Shore A durometer hardness for reliable compression set in sealing grooves
• Good ozone and weather resistance for exposed or outdoor applications
• Pack of 100 units suitable for bulk stocking by service contractors

Compatibility

Designed as an OEM-style replacement neoprene O-ring for Dash 121 groove applications in refrigeration, HVAC, and plumbing systems where neoprene compound seals are specified.

Installation Notes

Installation is typically performed by licensed HVAC technicians or plumbers as part of a seal replacement or system reassembly procedure. Always depressurize and evacuate the system before replacing O-rings in refrigeration or refrigerant-handling circuits. Lightly lubricate the O-ring with a compatible refrigerant oil or seal lubricant before seating to prevent tearing during installation. Do not reuse a removed O-ring; replace with a fresh seal every time the joint is opened.