Value Collection ZMSCV70340 Viton O-ring Dash 340 5-pack

Product Description

The VALUE COLLECTION ZMSCV70340 is a Dash 340 Viton (fluoroelastomer) O-ring designed for static and dynamic sealing applications where high temperature resistance and chemical compatibility are required. Measuring 3.375 inches inside diameter, 3.75 inches outside diameter, and 0.1875 inches thick, this round cross-section ring carries a Shore A hardness of 70. Viton compound delivers low compression set and low gas permeability, making it a dependable choice for demanding fluid and vacuum sealing environments. Each order includes a pack of 5 rings.

This O-ring is suited for HVAC, refrigeration, plumbing, and industrial fluid systems where petroleum-based media, high operating temperatures, or vacuum service conditions are present. Typical installations include pump seals, valve seats, flange joints, and fitting connections that see elevated temperatures or exposure to oils, fuels, and hydraulic fluids. The fluoroelastomer compound provides a wide spectrum of chemical compatibility, making this ring appropriate for both residential and commercial service applications.

Key Features

• Fluoroelastomer (Viton) material rated for service from -15 degrees F to 400 degrees F
• Round cross section with 70 Shore A hardness for reliable compression sealing
• Good resistance to petroleum products, oils, and hydraulic fluids
• Low compression set maintains seal integrity over repeated thermal cycles
• Low gas permeability suited for vacuum service applications
• Sold in a pack of 5 for common replacement and stocking needs

Compatibility

Designed as an OEM-style replacement Dash 340 O-ring for applications requiring a 3.375-inch ID fluoroelastomer seal compatible with petroleum products and high-temperature service conditions.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial maintenance technicians. Shut off and depressurize the system before removing the old O-ring and seating the replacement. Inspect the groove for damage or debris before installation and apply a compatible lubricant to the ring to ease seating and prevent twisting. Do not overstretch the ring during installation, as distortion reduces sealing effectiveness.