Value Collection ZMSCH90120 O-ring Dash 120 Nbr 50 Pack

Product Description

The VALUE COLLECTION ZMSCH90120 is a Dash 120 nitrile butadiene rubber (Buna-N) O-ring designed for static and dynamic sealing applications across a wide range of fluid-handling systems. It measures 1 inch inside diameter, 1.188 inches outside diameter, and 0.094 inches thick with a round cross section. Shore hardness is rated at 90 durometer, classifying it as extra hard. The operating temperature range spans -40 degrees F to 250 degrees F. Buna-N is the most widely used O-ring elastomer in the trade and provides excellent resistance to petroleum-based fluids, making it a go-to choice for HVAC technicians, plumbers, and fluid-power mechanics performing routine maintenance or system assembly.

This O-ring is suited for use in hydraulic systems, pneumatic assemblies, fuel-handling lines, and general plumbing connections where petroleum product exposure is expected. It is commonly installed in valve bodies, pump housings, cylinder heads, and pipe fittings. The 50-piece packaging makes it practical for service vans and shop inventory. It meets SAE and MIL-Spec standards, covering a broad range of residential and commercial service applications.

Key Features

• Buna-N (Nitrile Butadiene Rubber) material with excellent resistance to petroleum products
• 90 durometer extra-hard rating for high-compression sealing performance
• Temperature range: -40 degrees F to 250 degrees F
• Round cross section, Dash 120 designation for standard-size fitment
• Meets SAE and MIL-Spec standards
• Black color; 50-piece package quantity for shop or van stock

Compatibility

Compatible with petroleum-based products and fluids. Designed as a standard Dash 120 O-ring replacement for use in valves, pumps, fittings, and fluid-system components requiring a 1 inch ID Buna-N seal. Not FDA approved; not intended for food-grade or potable-water applications without independent verification.

Installation Notes

Installation is typically performed by HVAC technicians, plumbers, or hydraulic system mechanics. De-energize and depressurize the system fully before removing the old O-ring or installing a new one. Lightly lubricate the O-ring with a compatible fluid or grease before seating to reduce the risk of tearing during assembly. Do not store O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as this degrades elastomer integrity over time.