Value Collection ZMSCH70044 O-ring Dash 044 Nbr 3.75 in Id

Product Description

The VALUE COLLECTION ZMSCH70044 is a Dash 044 Nitrile Butadiene Rubber (NBR/Buna-N) O-ring used to create fluid-tight seals in hydraulic, pneumatic, and fluid handling systems. It measures 3.75 inches inside diameter, 3.875 inches outside diameter, and 0.0625 inches in cross-section thickness with a round cross-section profile. Rated at 70 Shore A hardness, it delivers firm compression set resistance and reliable sealing performance. The temperature range spans -40 degrees F to 250 degrees F, making it suitable for a broad range of operating environments. Plumbers, hydraulic technicians, and mechanical service professionals install this type of O-ring across residential and commercial applications.

This O-ring is designed for use in systems that handle petroleum-based fluids, oils, fuels, and hydraulic media. Its Buna-N elastomer compound provides excellent resistance to petroleum products along with strong tear and abrasion resistance. It is commonly installed in pump housings, valve bodies, cylinder heads, manifolds, and pipe fittings where a dependable static or dynamic face seal is required. The round cross-section ensures consistent gland contact. Sold in a package quantity of 50 units, this part is well suited for shop stock, fleet maintenance operations, and service calls requiring multiple replacements.

Key Features

• Buna-N (NBR) elastomer — the most widely used O-ring material for petroleum product resistance
• 70 Shore A hardness rating provides firm compression and strong compression set recovery
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross-section profile ensures consistent gland fit and sealing contact
• Meets SAE and MIL-Spec standards
• Package quantity of 50 for shop stock or bulk service use

Compatibility

Designed as an OEM-style replacement Dash 044 O-ring for hydraulic, pneumatic, and fluid system components compatible with petroleum-based media. Compatible materials include petroleum products as specified by the manufacturer. Not FDA approved — not intended for food, beverage, or pharmaceutical contact applications.

Installation Notes

Installation should be performed by a qualified mechanic, plumber, or hydraulic technician following the equipment manufacturer's service procedures. Always depressurize and drain the system before removing any sealing components. Inspect the gland groove for burrs, corrosion, or dimensional wear before installing a new O-ring. Avoid storing NBR O-rings in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades the elastomer.