Value Collection ZMSCS70151 Silicone O-ring Dash 151

Product Description

The VALUE COLLECTION ZMSCS70151 is a silicone o-ring in the standard Dash 151 size, designed for static and dynamic sealing applications across HVAC, plumbing, and industrial systems. It measures 3 inches inside diameter, 3.188 inches outside diameter, and 0.094 inches thick with a round cross section. The 70-durometer hardness rating places it in the hard range, making it well suited for applications that demand dimensional stability under compression. Silicone material gives this ring a wide usable temperature range, from -80 degrees F to 450 degrees F, with good dry heat and ozone resistance. Sold in a pack of 10.

This o-ring is used in residential and commercial HVAC equipment, refrigeration piping, plumbing fixtures, chemical handling assemblies, and general industrial sealing where wide temperature range performance is required. The silicone compound offers good weather and ozone resistance and performs reliably in environments with exposure to some chemicals and solvents. Note that oil resistance is limited, so verify fluid compatibility before installation in hydraulic or lubricated systems. Plumbers, HVAC technicians, and maintenance mechanics are the typical installers for this size and type.

Key Features

• Dash 151 standard sizing: 3 inches ID, 3.188 inches OD, 0.094 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F
• 70-durometer hardness for dimensional stability under compression load
• Round cross section for consistent seating in standard groove profiles
• Good weather and ozone resistance for outdoor or exposed installations
• Compatible with select oils, chemicals, and solvents — verify against specific fluid before use

Compatibility

Designed as a standard Dash 151 o-ring replacement for any groove machined to AS568 Dash 151 dimensions in HVAC, plumbing, refrigeration, and general industrial equipment.

Installation Notes

Licensed plumbers and HVAC technicians should depressurize and isolate the system before removing or installing o-rings. Clean the groove and mating surfaces thoroughly before seating the new ring. Avoid stretching the o-ring beyond necessary for installation, as silicone compounds are less elastic than EPDM or Buna-N alternatives. Verify chemical compatibility with the process fluid before final assembly.