Value Collection ZMSCH70MD111 O-ring Dash 111 Nbr 25 Pack

Product Description

The VALUE COLLECTION ZMSCH70MD111 is a Dash 111 O-ring made from Nitrile Butadiene Rubber (NBR), one of the most widely used elastomers in fluid sealing applications. It measures 0.424 inches inside diameter, 0.625 inches outside diameter, and 0.0937 inches thick, with a round cross section and a hardness rating of 70 Shore A. NBR offers excellent resistance to petroleum-based fluids, solid compression set performance, and strong tear and abrasion resistance. Licensed HVAC technicians, plumbers, and fluid-system mechanics commonly specify this material for sealing joints and fittings in oil, fuel, and hydraulic circuits. Sold in a pack of 25.

This O-ring is suited for use in residential and commercial systems handling petroleum products, hydraulic fluids, and similar media. Typical applications include valve stem seals, pipe fittings, pump housings, and refrigerant-side or oil-side connections where a standard Dash 111 profile is required. The operating temperature range spans -40 degrees F to 250 degrees F, making it appropriate for a broad range of indoor mechanical service environments. NBR should not be stored in direct sunlight or near motors and other electrical equipment that may generate ozone, as ozone exposure degrades the elastomer over time.

Key Features

• Nitrile Butadiene Rubber (NBR) construction — excellent resistance to petroleum products and hydraulic fluids
• Dash 111 standard sizing: 0.424 inches ID, 0.625 inches OD, 0.0937 inches thick
• 70 Shore A hardness — rated Hard for firm sealing under compression
• Operating range of -40 degrees F to 250 degrees F
• Round cross section for consistent seating in standard O-ring grooves
• Pack of 25 units for shop stock or repeat service calls

Compatibility

Designed as a standard Dash 111 O-ring replacement compatible with petroleum products and hydraulic fluid media. Confirm groove dimensions and media compatibility before installation. Not FDA approved for food-contact applications; additional information indicates Metal Detectable FDA designation.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or hydraulic system mechanics. Relieve all system pressure and drain or isolate the fluid circuit before removing the old O-ring. Lightly lubricate the O-ring with a fluid compatible with NBR and the system media before seating it in the groove — never stretch or roll the O-ring into place using sharp tools. Store unused O-rings away from direct sunlight, ozone sources, and electrical motors to preserve elastomer integrity.