Value Collection ZMSCS70043 Silicone O-ring Dash 043

Product Description

The VALUE COLLECTION ZMSCS70043 is a round cross-section silicone O-ring used to create static or dynamic seals in fluid and gas systems. It carries a Dash 043 designation with a 3.5-inch inside diameter, 3.625-inch outside diameter, and a wall thickness of 0.0625 inches. Rated at Shore 70 hardness, this O-ring is formulated for wide temperature service, performing reliably from -80 degrees F to 450 degrees F. It is sold in packages of 10. Silicone compound is chosen for its dry heat resistance and weather stability. Plumbers, HVAC technicians, and industrial maintenance personnel install O-rings of this type during equipment assembly, valve service, and pump maintenance.

This O-ring suits applications that demand a broad temperature range and good resistance to ozone and weathering. Compatible materials include oils, chemicals, and solvents, though oil resistance is limited compared to nitrile compounds. Typical installation scenarios include sealing pipe flanges, valve bodies, and equipment housings in residential and light commercial mechanical systems where silicone elastomers are specified. The orange or red color aids visual identification during assembly.

Key Features

• Dash 043 designation with 3.5-inch ID and 3.625-inch OD
• Round cross section with 0.0625-inch wall thickness
• Shore 70 hardness rated Hard
• Operating range from -80 degrees F to 450 degrees F
• Good resistance to dry heat, weather, and ozone
• Compatible with oils, chemicals, and solvents; limited oil resistance noted
• Packaged in quantities of 10

Compatibility

Designed as a standard Dash 043 silicone O-ring suitable for use in mechanical assemblies, valves, pumps, and fluid system components where a 3.5-inch ID silicone seal is specified.

Installation Notes

O-rings of this type are installed by licensed plumbers, HVAC technicians, and qualified maintenance personnel. Depressurize and drain the system before replacing any O-ring seal. Inspect the seating groove for burrs or scoring that could damage the new O-ring during installation. Avoid overstretching or twisting the O-ring when seating it, as either condition reduces sealing performance and service life.