Value Collection ZMSCS70046 Silicone O-ring Dash 046 10-pack

Product Description

The VALUE COLLECTION ZMSCS70046 is a silicone O-ring with a round cross section, sold in a pack of 10. It measures 4.25 inches inside diameter, 4.375 inches outside diameter, and 0.0625 inches thick, conforming to Dash 046 sizing. The silicone compound is rated Shore 70 hardness and handles a working temperature range of -80 degrees F to 450 degrees F, making it a practical choice for applications that demand wide thermal tolerance and good dry heat resistance. Licensed trades and maintenance technicians install these rings wherever a reliable static or low-motion seal is required.

This O-ring is suited for use in HVAC, plumbing, and industrial fluid-handling systems where exposure to oils, chemicals, and solvents is possible. The silicone material provides good weather and ozone resistance, though installers should note that oil resistance is limited compared to nitrile or EPDM compounds. Typical applications include pipe fittings, valve bodies, pump housings, and equipment access covers in both residential and light commercial service environments.

Key Features

• Dash 046 standard sizing: 4.25 inches ID x 4.375 inches OD x 0.0625 inches thick
• Shore 70 hardness rating for firm, reliable sealing under compression
• Wide temperature range: -80 degrees F to 450 degrees F
• Good weather and ozone resistance for outdoor or exposed installations
• Compatible with oils, chemicals, and solvents in general-duty service
• Pack of 10 units per order

Compatibility

Designed as a standard Dash 046 O-ring replacement for any groove or port sized to accept a 4.25-inch ID silicone seal in HVAC, plumbing, and fluid-handling equipment.

Installation Notes

Installation should be performed by a qualified technician with the system depressurized and all fluid supply shut off before disturbing any seal. Inspect the mating groove for burrs, corrosion, or old compound residue and clean the seating surface before installing the new ring. Avoid twisting or overstretching the O-ring during placement. Because oil resistance is limited with silicone, confirm compatibility with the specific fluid or refrigerant present in the system before installation.