Value Collection ZMSCH70MD330 O-ring Dash 330 Nbr Pack of 2

Product Description

The VALUE COLLECTION ZMSCH70MD330 is a Dash 330 Nitrile Butadiene Rubber (NBR) O-ring sold in a pack of 2. It features a 2.125-inch inside diameter, 2.5-inch outside diameter, and a 0.1875-inch (3/16 inches) round cross section. Hardness is rated at 70 Shore A, placing it in the hard range for elastomeric seals. Rated for service from -40 degrees F to 250 degrees F, this O-ring is built for dynamic and static sealing applications where petroleum-based fluids are present. Plumbers, HVAC technicians, and mechanical contractors install this type of seal in pumps, valves, fittings, and fluid system components requiring reliable compression sealing.

This O-ring is suited for residential and commercial plumbing, HVAC refrigeration circuits, hydraulic assemblies, and general industrial fluid systems where petroleum-product compatibility is required. Its Buna-N compound delivers excellent resistance to oils, fuels, and hydraulic fluids, making it a go-to choice for sealing threaded or flanged connections in mechanical service. The pack-of-2 quantity supports standard field replacement workflows.

Key Features

• Buna-N (NBR) compound offers excellent resistance to petroleum products, oils, and hydraulic fluids
• Rated from -40 degrees F to 250 degrees F for broad service temperature range
• 70 Shore A hardness provides strong tear and abrasion resistance
• Round cross section with 0.1875-inch thickness ensures consistent compression seating
• Widely compatible with petroleum-based fluid systems in plumbing, HVAC, and hydraulic applications
• Sold in a pack of 2 to support standard replacement service calls

Compatibility

Designed as a standard Dash 330 O-ring replacement for petroleum-product-compatible sealing applications in plumbing, HVAC, hydraulic, and general mechanical fluid systems. Compatible with petroleum products as stated by the manufacturer.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified mechanical contractor. Shut off fluid supply and depressurize the system completely before removing the existing seal. Inspect the seating groove for damage or debris before installing the new O-ring, and avoid twisting the ring during installation. Do not store O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as this degrades the elastomer.