Value Collection BDNA--9995-4 O-ring Dash 208 Nbr

Product Description

The VALUE COLLECTION BDNA--9995-4 is a Dash 208 O-ring used to create reliable fluid and gas seals in a wide range of plumbing, HVAC, and mechanical service applications. It measures 5/8 inches inner diameter with a 1/8 inch cross-section thickness and a round cross-section profile. Constructed from Nitrile Butadiene Rubber (NBR) with a durometer rating of 70, this O-ring resists petroleum-based oils, fuels, and common hydraulic fluids. Licensed plumbers, HVAC technicians, and mechanical service professionals regularly specify NBR O-rings for their strong resistance to compression set and broad chemical compatibility in low- to medium-pressure sealing situations.

This O-ring is suited for residential and light commercial service work where a standard inch-series Dash 208 seal is required. Typical applications include valve seats, pump housings, refrigerant service fittings, and threaded pipe connections where a face or radial seal is needed. The 70-durometer NBR compound performs across a wide service temperature range, making it a common go-to replacement in both HVAC refrigerant circuits and water supply components. It ships in a package quantity of one unit with a minimum order quantity of 25 pieces.

Key Features

• Dash 208 inch-series sizing: 5/8 inch ID, 1/8 inch thickness, round cross-section
• Nitrile Butadiene Rubber (NBR) construction resists petroleum oils, hydraulic fluid, and water
• 70 durometer hardness provides firm sealing without excessive compression force
• Round cross-section profile for consistent radial or face seal contact
• Inch-system dimensioning for straightforward drop-in fitment on standard US hardware

Compatibility

Designed as an OEM-style replacement or service O-ring for any application specifying a Dash 208 inch-series NBR O-ring with a 5/8 inch inside diameter and 1/8 inch cross-section thickness.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or qualified mechanical service technicians. Always shut off and relieve pressure from the system before removing or replacing any sealing component. Lightly lubricate the O-ring with a compatible fluid or O-ring lubricant before seating to reduce the risk of tearing during assembly. Do not roll or twist the O-ring into the groove; press it evenly to ensure uniform seating and leak-free service.