Value Collection ZMSCH70MD341 Nitrile O-ring Dash 341

Product Description

The VALUE COLLECTION ZMSCH70MD341 is a Dash 341 Buna-N (nitrile butadiene rubber) O-ring with a round cross section, designed for static and dynamic sealing applications across plumbing, hydraulic, pneumatic, and fluid-handling systems. It measures 3.475 inches inside diameter, 3.875 inches outside diameter, and 0.1875 inches (3/16 inches) thick. The compound carries a Shore A hardness of 70 and is rated for service from -40 degrees F to 250 degrees F, making it a dependable choice in a wide range of operating conditions. Each package contains 2 O-rings.

This O-ring is suited for residential and commercial applications where petroleum-based fluid sealing is required. Typical installations include pump housings, valve bodies, pipe unions, and hydraulic cylinder end caps. Buna-N is the most widely used O-ring elastomer in trade work and is compatible with petroleum products, oils, fuels, and many hydraulic fluids. It is installed by plumbers, HVAC technicians, and hydraulic equipment technicians during routine maintenance or component replacement.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound — excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating — suitable for both static and dynamic sealing
• Service temperature range: -40 degrees F to 250 degrees F
• Round cross section for consistent seating in standard O-ring grooves
• Excellent compression set, tear resistance, and abrasion resistance
• Black color; Metal Detectable FDA designation noted (not FDA Approved)

Compatibility

Designed as a standard Dash 341 O-ring replacement compatible with petroleum-product and hydraulic fluid service applications where a Buna-N compound with 3.475 inches ID and 0.1875 inches cross-section thickness is specified.

Installation Notes

Shut down and depressurize the system fully before removing the old O-ring. Inspect the groove and mating surfaces for nicks, scoring, or contamination before installing the new O-ring. Lightly lubricate the O-ring with a compatible petroleum-based lubricant prior to installation to reduce the risk of tearing during assembly. Do not store unused O-rings in direct sunlight or near motors or other electrical equipment that may generate ozone, as this degrades the elastomer.