Value Collection ZMSCS70353 Silicone O-ring Dash 353

Product Description

The VALUE COLLECTION ZMSCS70353 is a round cross-section silicone O-ring sized at 5 inches inside diameter, 5.375 inches outside diameter, and 0.1875 inches thick, conforming to Dash 353 sizing standards. With a Shore hardness of 70 and a service temperature range of -80 degrees F to 450 degrees F, this O-ring is built for demanding sealing applications where wide temperature variation and dry heat resistance are primary concerns. It is installed by plumbers, HVAC technicians, industrial maintenance technicians, and equipment assemblers wherever a reliable static or dynamic face seal is required at this diameter.

This O-ring is suited for applications involving exposure to oils, chemicals, and solvents in residential, commercial, and light industrial environments. Silicone compound offers good weather and ozone resistance, making it appropriate for outdoor and HVAC equipment housings, pump assemblies, and fluid system fittings. The Dash 353 dimension standard is widely used across plumbing, fluid handling, and mechanical equipment platforms. This SKU ships in a package quantity of 5 rings with a minimum order quantity of 1.

Key Features

• Dash 353 standard sizing: 5 inches ID, 5.375 inches OD, 0.1875 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F
• Shore hardness 70 (Hard rating) for robust sealing under compression
• Round cross-section profile for standard groove fitment
• Compatible with oils, chemicals, and solvents
• Good weather and ozone resistance for outdoor or exposed installations

Compatibility

Designed as a standard Dash 353 replacement O-ring for any application calling for a 5 inches ID silicone O-ring with a round cross-section and 70 Shore hardness. Not FDA approved; verify material suitability for food-contact or potable water applications before installation.

Installation Notes

Shut down and depressurize the system before removing the existing O-ring. Clean the groove and mating surfaces thoroughly to remove debris, old sealant, or damaged seal material. Apply a compatible lubricant to ease installation and prevent tearing during assembly. Follow applicable codes such as ASME or IPC for pressure system sealing requirements in plumbing and fluid handling applications.