Value Collection ZMSCS70153 Silicone O-ring Dash 153

Product Description

The VALUE COLLECTION ZMSCS70153 is a silicone o-ring with a round cross section, sized to Dash 153 standards. It measures 3.5 inches inside diameter, 3.688 inches outside diameter, and 0.0937 inches thick (3/32 inches). Rated Shore A 70 hardness, this o-ring is suited for sealing applications that demand a wide operating temperature range, spanning -80 degrees F to 450 degrees F. It offers good resistance to dry heat, weather, and ozone. Licensed trades and industrial maintenance technicians use this o-ring in mechanical, plumbing, HVAC, and fluid-handling assemblies where silicone compounds outperform standard rubber seals.

This o-ring is appropriate for static and low-dynamic sealing applications in residential and commercial systems where exposure to chemicals, solvents, and moderate oils is expected. Its silicone construction handles wide thermal cycling, making it a common choice for high-temperature gasket seats, pipe flanges, pump housings, and equipment access covers. It is sold in a package quantity of 10, with a minimum order quantity of 1 package. Note that silicone offers limited oil resistance; verify fluid compatibility before installation in heavy petroleum environments.

Key Features

• Dash 153 standard sizing: 3.5 inches ID, 3.688 inches OD, 0.0937 inches thick
• Operating temperature range: -80 degrees F to 450 degrees F
• Shore A 70 hardness rating for firm, reliable sealing compression
• Good weather and ozone resistance for long service life in exposed environments
• Compatible with oils, chemicals, and solvents in moderate-concentration applications
• Round cross section for consistent seating in standard o-ring grooves

Compatibility

Designed as a standard Dash 153 silicone o-ring replacement for static and low-dynamic sealing applications in HVAC, plumbing, and industrial fluid-handling equipment where silicone compound seals are specified.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or industrial maintenance personnel. Depressurize and isolate the system before removing the existing seal. Inspect the o-ring groove for scoring or debris, and clean the seating surface before installing the new o-ring. Do not stretch the o-ring beyond its rated size, and confirm fluid and temperature compatibility before returning the system to service.