Value Collection ZMSCH3X38 Buna-n O-ring 38mm Id 44mm Od

Product Description

The VALUE COLLECTION ZMSCH3X38 is a round cross-section O-ring made from Buna-N (Nitrile Butadiene Rubber), one of the most widely used elastomers in fluid sealing applications. It measures 38mm inside diameter by 44mm outside diameter with a 3mm cross-section thickness. Rated at 70 Shore hardness, this O-ring delivers reliable compression set resistance, along with strong tear and abrasion resistance. Its black Buna-N construction makes it especially suited for environments involving petroleum-based fluids. Licensed tradespeople in HVAC, plumbing, and industrial service rely on this type of O-ring for sealing hydraulic, pneumatic, and refrigerant-adjacent fluid connections.

This O-ring is intended for use in residential and commercial applications where petroleum-based fluid compatibility is required. Typical install scenarios include pump seals, valve bodies, fittings, hydraulic cylinders, and fluid line connections. It performs across a working temperature range of -40 degrees F to 250 degrees F, making it viable in both cold-climate and moderate-heat service environments. It meets SAE and MIL-Spec standards. Package quantity is 25 units per order with a minimum order quantity of 1.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction offers excellent resistance to petroleum products
• 70 Shore hardness rating provides firm sealing under compression
• Round cross-section geometry for standard O-ring groove fitment
• Operating temperature range: -40 degrees F to 250 degrees F
• Meets SAE and MIL-Spec standards
• Strong tear and abrasion resistance for demanding service conditions

Compatibility

Compatible with petroleum-based products and fluids. Designed for use in standard O-ring grooves sized for 38mm ID by 44mm OD by 3mm cross-section round-profile seals. Not FDA approved. Store away from direct sunlight, motors, and other ozone-generating electrical equipment.

Installation Notes

O-ring installation should be performed by a qualified plumber, HVAC technician, or industrial mechanic depending on the application. Always depressurize and de-energize the system before replacing any sealing component. Inspect the seating groove for nicks, corrosion, or contamination before installing the new O-ring. Avoid twisting or over-stretching the O-ring during installation, as deformation will compromise the seal.