Value Collection ZMSCV70143 Viton O-ring Dash 143 10 Pack

Product Description

The VALUE COLLECTION ZMSCV70143 is a Dash 143 Viton fluoroelastomer O-ring used to create static or dynamic fluid seals in plumbing, HVAC, and industrial piping systems. It measures 2.438 inches inside diameter and 2.625 inches outside diameter, with a cross-section thickness of 0.0937 inches (3/32 inch). The round cross-section profile seats cleanly in standard Dash 143 grooves. Rated for service from -15 degrees F to 400 degrees F, this O-ring handles high-temperature applications where standard nitrile or EPDM compounds fall short. Sold in a package of 10 units. Licensed plumbers, HVAC technicians, and pipefitters install this type of seal during equipment assembly, valve service, and pump maintenance.

This O-ring is suited for applications involving petroleum-based fluids, hydraulic oils, fuels, and related chemical media. The fluoroelastomer compound offers low compression set, which helps maintain a reliable seal under sustained clamping load. Its low gas permeability makes it appropriate for vacuum service as well as pressurized systems. Typical install locations include pump housings, valve bodies, manifolds, and threaded fittings in residential and light commercial mechanical systems where elevated temperatures or hydrocarbon exposure would degrade softer elastomers.

Key Features

• Fluoroelastomer (Viton-type) compound rated from -15 degrees F to 400 degrees F
• Round cross-section, Dash 143 standard sizing for drop-in groove fit
• Good resistance to petroleum products, hydraulic fluids, and fuels
• Low compression set maintains seal integrity under sustained load
• Low gas permeability suitable for vacuum service applications
• Package quantity of 10 units per order

Compatibility

Designed as a standard Dash 143 O-ring replacement compatible with any groove or fitting machined to Dash 143 dimensions. Compatible materials include petroleum products and related hydrocarbon media. Not FDA approved; not intended for food-contact or potable-water service.

Installation Notes

Installation should be performed by a licensed plumber, HVAC technician, or pipefitter. De-pressurize and drain the system completely before removing any fitting or housing that retains this seal. Inspect the mating groove for scoring or corrosion before seating the new O-ring. Avoid using petroleum-based lubricants on fluoroelastomer O-rings unless confirmed compatible with the system fluid; use an appropriate assembly lubricant rated for fluoroelastomer compounds.