Value Collection ZMSCH70152 O-ring Dash 152 Nbr 50-pack

Product Description

The VALUE COLLECTION ZMSCH70152 is a Dash 152 O-ring manufactured from Nitrile Butadiene Rubber (Buna-N), the most widely used elastomer in fluid sealing applications. It features a round cross section with a 3.25-inch inside diameter, a 3.4380-inch outside diameter, and a 0.0937-inch (3/32 inch) thickness. Rated at 70 Shore A hardness, this O-ring delivers firm, reliable compression set performance. It is sold in packages of 50 and is suited for hydraulic, pneumatic, and general mechanical sealing work performed by plumbers, HVAC technicians, and industrial maintenance professionals.

This O-ring is designed for use in applications involving petroleum-based fluids and lubricants. The Buna-N compound provides excellent resistance to petroleum products, along with strong tear and abrasion resistance. It performs across a wide service temperature range, from -40 degrees F to 250 degrees F, making it appropriate for both mobile equipment and stationary mechanical systems. Typical installations include fluid line fittings, valve stems, pump housings, and cylinder end caps in both residential and light commercial settings.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound — the industry standard for petroleum product resistance
• Dash 152 standard sizing: 3.25 inches ID, 3.4380 inches OD, 0.0937 inches thick
• 70 Shore A hardness rating for firm compression set and long service life
• Rated from -40 degrees F to 250 degrees F operating temperature range
• Round cross section for consistent seating and even load distribution
• Meets SAE and MIL-Spec standards
• Packaged in quantities of 50 for shop stock or service van inventory

Compatibility

Compatible with petroleum-based fluids and lubricants. Designed as an OEM-style replacement or service stock O-ring for hydraulic systems, pneumatic fittings, valves, and pump assemblies requiring a Dash 152 Buna-N seal. Not rated for FDA food-contact applications.

Installation Notes

O-ring installation should be performed by a qualified plumber, HVAC technician, or mechanical service professional. Before replacing the O-ring, relieve all system pressure and shut off fluid supply to the service point. Inspect the groove and mating surfaces for nicks, burrs, or corrosion before seating the new ring. Avoid twisting or overstretching the O-ring during installation; apply a compatible petroleum-based lubricant to ease seating and reduce installation damage. Do not store unused O-rings in direct sunlight or near motors and electrical equipment that may generate ozone, as ozone degrades Buna-N elastomers over time.