Value Collection ZMSCH70041 O-ring Dash 041 Buna-n 100-pack

Product Description

The VALUE COLLECTION ZMSCH70041 is a Dash 041 Buna-N (Nitrile Butadiene Rubber) o-ring designed for sealing applications in fluid and pneumatic systems. Measuring 3 inches inside diameter, 3.125 inches outside diameter, and 0.0625 inches thick with a round cross section, this o-ring provides reliable static and dynamic sealing in a wide range of industrial and trade service environments. Rated at 70 Shore A hardness, it offers good compression set resistance along with strong tear and abrasion resistance. It is compatible with petroleum-based fluids and commonly installed by plumbers, HVAC technicians, and mechanical service technicians. Each order unit contains 100 o-rings.

This o-ring is suited for use in hydraulic systems, pneumatic assemblies, pumps, valves, compressors, and plumbing connections where exposure to petroleum products, oils, and fuels is expected. Its Buna-N compound is the most widely used o-ring elastomer in the trade, making it a practical stock item for service vans and shop inventory. Typical applications include sealing pump housings, valve stems, pipe unions, and refrigeration service fittings in residential and light commercial systems. It should not be stored in direct sunlight or near motors and electrical equipment that may generate ozone.

Key Features

• Buna-N (Nitrile Butadiene Rubber) compound — excellent resistance to petroleum products, oils, and fuels
• 70 Shore A hardness rating provides firm, reliable sealing with good compression set resistance
• Round cross section, Dash 041 standard sizing for easy cross-reference and replacement
• Operating temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Sold in a pack of 100 — suitable for shop stock and field inventory

Compatibility

Compatible with petroleum products, oils, and fuels. Designed as a standard Dash 041 o-ring replacement for use in hydraulic, pneumatic, plumbing, and HVAC service applications where Buna-N elastomer is appropriate. Not FDA approved; not recommended for food-contact applications.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or mechanical service technicians. Always depressurize and de-energize the system and relieve all fluid pressure before removing or replacing o-rings. Lightly lubricate the o-ring with a compatible fluid or grease before seating to prevent pinching or tearing during installation. Do not store unused o-rings in direct sunlight or near ozone-generating equipment such as motors or electrical panels, as ozone exposure degrades Nitrile rubber.