Value Collection ZMSCS70FDA228 Silicone O-ring Dash 228

Product Description

The VALUE COLLECTION ZMSCS70FDA228 is a Dash 228 silicone O-ring with a round cross section, designed for static and dynamic sealing applications across a wide temperature range. It measures 2.234 inches inside diameter, 2.5 inches outside diameter, and 0.125 inches thick. Made from FDA-compliant silicone with a Shore A hardness of 70, this O-ring is rated for service from -80 degrees F to 450 degrees F. The red color aids visual identification during installation. Plumbers, pipefitters, HVAC technicians, and equipment service pros install this type of seal in systems where standard elastomers would fail under thermal cycling or ozone exposure.

This O-ring is suited for applications requiring good dry heat resistance, weather resistance, and ozone resistance. Its FDA-compliant silicone material makes it appropriate for use in food-processing equipment, potable water systems, and pharmaceutical-adjacent environments where material compliance is required. It offers limited oil resistance, so it is not the preferred choice in heavy petroleum or hydraulic fluid environments. Typical install scenarios include pump housings, valve bodies, fittings, and equipment covers in both residential and commercial settings. Sold in packages of 10.

Key Features

• FDA-compliant silicone material — suitable for food processing and potable water applications
• Wide service temperature range: -80 degrees F to 450 degrees F
• Shore A hardness of 70 — rated Hard, providing reliable compression sealing
• Good weather and ozone resistance for outdoor or exposed installations
• Round cross section — standard geometry for grooved-seat sealing applications
• Red color for easy visual identification in the field

Compatibility

Designed as a standard Dash 228 O-ring replacement compatible with grooves and seats dimensioned to the AS568 standard for 2.234 inches ID and 2.5 inches OD sealing surfaces. Compatible with oils, chemicals, and solvents as noted by the manufacturer; limited oil resistance applies.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or equipment mechanics. Shut off and depressurize the system fully before removing the old O-ring. Inspect the groove for wear, scoring, or contamination before seating the new ring. Lubricate with a compatible, food-grade lubricant where FDA compliance must be maintained, and avoid petroleum-based lubricants that may degrade silicone.