Value Collection ZMSCH70918 O-ring Dash 918 Nbr 100-pack

Product Description

The VALUE COLLECTION ZMSCH70918 is a Dash 918 O-ring designed for use in hydraulic, pneumatic, and fluid-handling systems where a reliable static or dynamic face seal is required. Manufactured from Nitrile Butadiene Rubber (Buna-N), this O-ring measures 1.355 inches inside diameter, 1.587 inches outside diameter, and 0.116 inches thick with a round cross section. The 70 Shore A hardness rating delivers a firm, consistent seal with strong compression set resistance and good tear and abrasion resistance. Licensed plumbers, hydraulic technicians, and millwrights routinely specify Buna-N for petroleum-based fluid circuits. This part is packaged in a quantity of 100.

This O-ring is well suited for straight-thread tube fitting boss gasket applications and any plumbing or hydraulic assembly exposed to petroleum-based fluids. The Buna-N compound offers excellent resistance to oils, fuels, and greases across a wide service temperature range of -40 degrees F to 250 degrees F. Residential and commercial plumbing systems, hydraulic power units, and fuel handling equipment represent typical install environments. The Dash 918 sizing is a standard dimension that appears across a broad range of OEM fittings and aftermarket assemblies. Meets SAE and MIL-Spec standards.

Key Features

• Buna-N (Nitrile Butadiene Rubber) construction — the most widely used O-ring elastomer for petroleum-service applications
• Dash 918 standard sizing: 1.355 inches ID, 1.587 inches OD, 0.116 inches thick
• 70 Shore A hardness with round cross section for predictable seating and compression
• Rated for service from -40 degrees F to 250 degrees F
• Compatible with petroleum products including oils, fuels, and hydraulic fluids
• Meets SAE and MIL-Spec standards; sold in a pack of 100

Compatibility

Designed as an OEM-style replacement or service stock O-ring for straight-thread tube fitting boss gasket applications in hydraulic, pneumatic, and plumbing systems where a Dash 918 Buna-N seal is specified. Compatible with petroleum-based media. Not recommended for use with ozone, strong oxidizing agents, or direct sunlight exposure during storage.

Installation Notes

Installation is typically performed by licensed plumbers, hydraulic technicians, or qualified HVAC and refrigeration mechanics depending on the application. Depressurize and drain the system completely before removing the old O-ring to prevent fluid release or injury. Lightly lubricate the O-ring with a compatible petroleum-based fluid before seating to prevent nicking or rolling during assembly. Do not store O-rings near motors, electrical equipment, or in direct sunlight, as ozone and UV exposure degrade Buna-N compounds over time.