Value Collection ZMSCH70FDA333 O-ring Dash 333 Buna-n Fda

Product Description

The VALUE COLLECTION ZMSCH70FDA333 is a Dash 333 nitrile Buna-N O-ring with a round cross section, designed for static and dynamic sealing applications across plumbing, HVAC, hydraulic, and fluid-handling systems. It measures 2.475 inches inside diameter, 2.875 inches outside diameter, and 0.1875 inches (3/16 inches) thick. This O-ring carries an FDA approval rating, making it suitable for use in food-grade and sanitary fluid systems. Rated at 70 Shore A hardness, it provides reliable compression set performance and strong resistance to abrasion and tearing. Licensed plumbers, HVAC technicians, and maintenance professionals use this ring as a replacement seal in a wide range of equipment.

This O-ring is suited for residential and commercial applications involving petroleum-based fluids and hydraulic media. Its Buna-N elastomer compound is the most widely used O-ring material in trade service and performs across a temperature range of -40 degrees F to 250 degrees F. FDA approval makes it appropriate for potable water systems, food processing equipment, and sanitary plumbing fittings where material compliance is required. The ring is sold in a package quantity of 10 units, making it practical for stocking service vans or shop inventory.

Key Features

• FDA-approved Buna-N (nitrile butadiene rubber) compound suitable for food-grade and sanitary fluid contact
• Dash 333 standard sizing: 2.475 inches ID x 2.875 inches OD x 0.1875 inches thick
• 70 Shore A hardness rating for firm compression set and reliable sealing under pressure
• Operating temperature range of -40 degrees F to 250 degrees F
• Round cross section for consistent seat contact in standard O-ring grooves
• Meets SAE and MIL-Spec standards; UNSPSC Code 31401503
• Packaged in quantities of 10 per order unit

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Designed as an OEM-style replacement seal for any application specifying a Dash 333 Buna-N O-ring with a 2.475-inch ID and 2.875-inch OD. Should not be used in applications involving ozone exposure, direct sunlight storage, or in proximity to motors or electrical equipment that generate ozone.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or qualified maintenance professional following applicable IPC or OEM equipment guidelines. Always depressurize and isolate the system before removing the old seal and seating the replacement ring. Inspect the O-ring groove for burrs or damage prior to installation, and apply a compatible lubricant to ease seating without distorting the cross section. Do not overstretch the ring during installation, as this can compromise the seal.