Value Collection ZMSCS70123 Silicone O-ring Dash 123 25-pack

Product Description

The VALUE COLLECTION ZMSCS70123 is a round cross-section silicone O-ring packaged in a quantity of 25. It measures 1.188 inches inside diameter, 1.375 inches outside diameter, and 0.094 inches thick, corresponding to Dash Number 123. Rated at 70 Shore A hardness, this O-ring is suited for static and dynamic sealing applications where a wide service temperature range is required. The silicone compound handles continuous exposure from -80 degrees F to 450 degrees F, making it a practical choice for high-heat and cold-environment sealing scenarios encountered in HVAC, plumbing, and general mechanical assemblies.

This O-ring is appropriate for use in residential and commercial HVAC equipment, plumbing fittings, pump assemblies, and general industrial sealing applications where exposure to dry heat, weather, and ozone is a factor. Silicone compounds offer good resistance to ozone and weathering, though oil resistance is limited. Techs and mechanics should confirm fluid compatibility before installation in oil-immersed or heavy solvent environments. Each pack contains 25 O-rings, useful for service kits or batch repairs.

Key Features

• Dash 123 standard sizing: 1.188 inches ID, 1.375 inches OD, 0.094 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F continuous service
• 70 Shore A hardness for consistent compression and sealing load
• Round cross-section profile for use in standard O-ring grooves
• Good resistance to dry heat, weather, and ozone
• Sold in a pack of 25 for service inventory or multi-unit repair jobs

Compatibility

Designed as a Dash 123 O-ring replacement for any application specifying a 1.188-inch ID, 1.375-inch OD, 0.094-inch thick round cross-section silicone seal. Confirm chemical compatibility with the process fluid before installation, as oil and solvent resistance is limited with this silicone compound.

Installation Notes

Installation should be performed by a qualified technician familiar with sealing system requirements. Always relieve system pressure and shut off fluid supply before removing or replacing O-rings. Lubricate the O-ring with a compatible silicone-based lubricant during installation to prevent tearing or rolling in the groove. Avoid using petroleum-based lubricants, which can degrade silicone compounds.