Value Collection ZMSCS70211 Silicone O-ring Dash 211 100 Pack

Product Description

The VALUE COLLECTION ZMSCS70211 is a Dash 211 silicone O-ring designed for static and dynamic sealing applications across HVAC, plumbing, and general mechanical systems. It measures 0.796 inches inside diameter, 1.063 inches outside diameter, and 0.125 inches thick, with a round cross section. The silicone compound provides a rated operating range of -80 degrees F to 450 degrees F, making it suitable for high-heat and wide-temperature-swing environments. Hardness is rated at 70 Shore A. Sold in packages of 100. This O-ring is typically installed by HVAC technicians, plumbers, and maintenance mechanics wherever a dependable face or radial seal is required.

This O-ring is used in applications requiring good dry heat resistance, weather resistance, and ozone resistance. The silicone material also offers limited compatibility with oils, chemicals, and solvents, making it a practical choice for general-purpose sealing in residential and light commercial equipment. Typical applications include pump housings, valve bodies, manifold fittings, and equipment covers where sustained elevated temperatures are present and a reliable elastomeric seal is needed.

Key Features

• Wide temperature range: -80 degrees F to 450 degrees F
• 70 Shore A hardness rating for firm, consistent sealing compression
• Round cross section conforms to standard Dash 211 groove dimensions
• Good resistance to weathering and ozone degradation
• Compatible with oils, chemicals, and solvents in limited-exposure applications
• White silicone material suitable for high-dry-heat environments

Compatibility

Designed as a standard Dash 211 O-ring replacement for any groove machined to Dash 211 specifications per AS568 standard sizing.

Installation Notes

O-rings of this type are installed by HVAC technicians, plumbers, and mechanical service professionals. Always de-energize equipment and relieve system pressure before replacing seals. Inspect the mating groove for burrs, scoring, or debris that could damage the O-ring during installation. Avoid overstretching the O-ring during placement, as silicone elastomers are more susceptible to tearing than EPDM or Buna-N compounds.