Value Collection ZMSCH70MD148 O-ring Dash 148 Nbr 10-pack

Product Description

The VALUE COLLECTION ZMSCH70MD148 is a Dash 148 nitrile butadiene rubber (NBR) O-ring sold in a pack of 10. It features a round cross section with a 2.737-inch inside diameter, a 2.937-inch outside diameter, and a 3/32-inch (0.0937-inch) thickness. Hardness is rated at 70 Shore A, placing it in the hard category. NBR is the most widely used O-ring elastomer in trade applications, offering excellent resistance to petroleum products, strong compression set performance, and solid tear and abrasion resistance. HVAC technicians, plumbers, and industrial maintenance professionals rely on this material for fluid and gas sealing in petroleum-compatible systems.

This O-ring is suited for static and dynamic sealing applications involving petroleum-based fluids, oils, and fuels. Typical install scenarios include hydraulic fittings, fuel system connections, compressor service, and general plumbing seals where petroleum-product exposure is expected. The Dash 148 designation follows standard AS568 sizing, making it straightforward to cross-reference against OEM seal specifications. The pack quantity of 10 supports service kits, scheduled maintenance, and shop stock. Note that this part is not FDA approved for food-contact applications. It carries a Metal Detectable FDA designation per the additional information provided.

Key Features

• NBR elastomer provides excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating for strong compression set and abrasion resistance
• Round cross section, Dash 148 designation per AS568 standard sizing
• Rated from -40 degrees F minimum to 250 degrees F maximum working temperature
• Should not be stored in direct sunlight or near motors and electrical equipment that may generate ozone
• Sold in a pack of 10 for maintenance stock and service kit use

Compatibility

Compatible with petroleum products and petroleum-based fluids. Designed as a standard Dash 148 replacement O-ring for any application requiring AS568-sized NBR seals with a 2.737-inch inside diameter and 3/32-inch cross section.

Installation Notes

O-rings of this type are typically installed by HVAC technicians, plumbers, or mechanical maintenance professionals. Shut down the system and relieve all pressure before replacing any seals. Inspect the mating groove and sealing surfaces for damage or contamination before installing the new ring. Avoid twisting or rolling the O-ring during installation, and do not store unused rings near ozone-generating equipment or in direct sunlight, as this degrades NBR material over time.