Value Collection ZMSCH90234 O-ring Dash 234 Buna-n 90 Duro

Product Description

The VALUE COLLECTION ZMSCH90234 is a Dash 234 Buna-N (Nitrile Butadiene Rubber) O-ring designed for static and dynamic sealing applications across plumbing, HVAC, hydraulic, and general industrial systems. It measures 3 inches inside diameter, 3.25 inches outside diameter, and 0.125 inches thick, with a round cross-section profile. At 90 durometer, this O-ring falls in the extra-hard hardness range, making it well-suited for higher-pressure sealing environments. It carries an operating temperature range of -40 to 250 degrees F. Licensed plumbers, HVAC technicians, and maintenance mechanics install this type of seal during equipment overhaul or preventive maintenance work.

Buna-N is the most widely used O-ring elastomer in the trades. This O-ring performs reliably in systems that contact petroleum-based fluids, oils, fuels, and many hydraulic fluids. It is appropriate for residential and light commercial applications wherever a Dash 234 cross-section seal is specified. Each package contains 50 O-rings, making it practical for shop stock or field service kits. It is not recommended for exposure to ozone, direct sunlight during storage, or environments near motors and other electrical equipment that generate ozone.

Key Features

• Buna-N (Nitrile Butadiene Rubber) material with excellent resistance to petroleum products
• 90 durometer extra-hard rating for higher-pressure sealing applications
• Operating temperature range of -40 to 250 degrees F
• Round cross-section, Dash 234 designation, 3 inches ID x 3.25 inches OD x 0.125 inches thick
• Good compression set, tear resistance, and abrasion resistance
• Meets SAE and MIL-Spec standards
• Package quantity of 50 per order unit

Compatibility

Compatible with petroleum products and petroleum-based hydraulic fluids. Designed as a standard Dash 234 replacement O-ring for any fitting, valve, or component specifying a 3 inches ID Buna-N seal with a 0.125 inches cross-section. Not FDA approved; not intended for food-contact or potable-water applications where NSF or FDA-grade elastomers are required.

Installation Notes

Plumbers, HVAC technicians, and hydraulic system mechanics typically install O-rings of this type during valve, fitting, or equipment reassembly. Relieve all system pressure and drain fluid before replacing any O-ring seal. Lubricate the O-ring with a compatible fluid or O-ring lubricant before installation to prevent tearing during seating. Store unused O-rings away from direct sunlight, ozone sources, and electrical equipment to preserve elastomer integrity.