Value Collection ZMSCS70368 Silicone O-ring Dash 368

Product Description

The VALUE COLLECTION ZMSCS70368 is a round cross-section silicone O-ring designed for static and dynamic sealing applications across a wide range of operating environments. With an inside diameter of 7.75 inches, an outside diameter of 8.125 inches, and a thickness of 0.1875 inches, this Dash 368 O-ring meets standard AS568 sizing. Silicone construction provides a working temperature range of -80 degrees F to 450 degrees F, making it suitable for high-heat and cold-environment service. Hardness is rated at 70 Shore A. This O-ring is installed by plumbers, HVAC technicians, and industrial mechanics requiring a reliable large-diameter seal.

This O-ring is used in sealing applications that demand good dry heat resistance, weather resistance, and ozone resistance. Typical installations include large-bore pipe flanges, pump housings, valve bodies, and equipment access covers in both residential and commercial settings. The silicone material also offers limited compatibility with oils, chemicals, and solvents. It is sold individually and is suitable for single-use replacement or maintenance sealing tasks where a Dash 368 standard size is specified.

Key Features

• Silicone material rated for -80 degrees F to 450 degrees F continuous service
• Round cross-section profile for consistent compression and sealing
• Dash 368 standard sizing: 7.75 inches ID, 8.125 inches OD, 0.1875 inches thick
• 70 Shore A hardness for firm, reliable compression sealing
• Good resistance to weathering, ozone, and dry heat exposure
• Compatible with oils, chemicals, and solvents in limited-exposure applications

Compatibility

Designed as a standard Dash 368 O-ring replacement for any application specifying a 7.75-inch ID silicone round cross-section seal per AS568 sizing conventions.

Installation Notes

Installation of large-diameter O-rings should be performed by a licensed plumber, HVAC technician, or qualified mechanic. Always shut off system pressure and allow the assembly to cool before removing the old O-ring and seating the replacement. Inspect the groove and mating surfaces for damage or debris before installation. Avoid stretching or twisting the O-ring during seating to prevent premature failure or seal distortion.