Value Collection ZMSCS70233 Silicone O-ring Dash 233 10-pack

Product Description

The VALUE COLLECTION ZMSCS70233 is a silicone O-ring with a round cross section, designed for static and dynamic sealing applications across HVAC, plumbing, and industrial fluid systems. It measures 2.875 inches inside diameter, 3.125 inches outside diameter, and 0.125 inches thick, conforming to Dash 233 sizing. The 70 durometer hardness rating places it in the hard range, giving it good dimensional stability under compression. Silicone construction provides a wide service temperature range from -80 degrees F to 450 degrees F, along with good dry heat and ozone resistance. Each package contains 10 O-rings.

This O-ring is suited for residential and commercial applications where elevated temperature exposure, weather resistance, or ozone resistance is a primary concern. Typical installation scenarios include pump housings, valve stems, flanged connections, and equipment covers in HVAC, pool, and light industrial service. Note that silicone offers limited oil resistance, so it is not the recommended choice for petroleum-based fluid sealing. Compatible materials include water, chemicals, and certain solvents as noted by the manufacturer.

Key Features

• Dash 233 standard sizing: 2.875 inches ID x 3.125 inches OD x 0.125 inches thick
• Silicone material rated for -80 degrees F to 450 degrees F continuous service
• 70 durometer hard rating for dimensional stability under compression
• Round cross section for consistent seating in standard O-ring grooves
• Good weather and ozone resistance for outdoor or exposed installations
• Sold in a package of 10 units

Compatibility

Designed as a standard Dash 233 O-ring replacement suitable for any groove or fitting that accepts the 2.875 inches ID by 3.125 inches OD by 0.125 inches cross section profile. Verify chemical compatibility before use in petroleum or oil-based fluid systems, as silicone has limited oil resistance.

Installation Notes

O-ring replacement is performed by licensed HVAC technicians, plumbers, or qualified service professionals depending on the system type. Always depressurize and isolate the system before removing the old O-ring. Inspect the groove for nicks, corrosion, or debris before seating the new ring. Avoid twisting or stretching the O-ring during installation, and use only a compatible, non-petroleum lubricant if lubrication is required for assembly.