Value Collection ZMSCS70333 Silicone O-ring Dash 333

Product Description

The VALUE COLLECTION ZMSCS70333 is a silicone O-ring with a round cross section, used as a static or dynamic seal in fluid, pneumatic, and thermal applications across HVAC, plumbing, and industrial equipment. It carries a Dash 333 designation with a 2.5-inch inside diameter, 2.875-inch outside diameter, and a 0.1875-inch thickness. The 70-durometer hardness rating provides a firm, resilient seal. Silicone compound delivers a wide service temperature range from -80 degrees F to 450 degrees F, making this O-ring a practical choice wherever conventional rubber compounds fall short. Sold in a package of 10.

This O-ring is suited for use in equipment and assemblies where dry heat resistance and resistance to weather and ozone degradation are required. Typical install scenarios include pump housings, valve bodies, pipe unions, HVAC equipment access covers, and heat exchanger connections. This compound offers limited oil resistance and is compatible with oils, chemicals, and solvents in light-duty concentrations. It is intended for installations handled by licensed HVAC technicians, plumbers, or mechanical contractors maintaining equipment with moderate chemical exposure and wide-range temperature cycling.

Key Features

• Dash 333 designation: 2.5-inch ID, 2.875-inch OD, 0.1875-inch thickness
• Silicone compound rated from -80 degrees F to 450 degrees F
• 70 durometer hardness for a firm, reliable seal
• Round cross section for consistent seating in standard O-ring grooves
• Good weather and ozone resistance for long service life in exposed or cycling environments
• Package of 10 units — suitable for service inventory or bulk replacement use

Compatibility

Designed as a standard Dash 333 silicone O-ring replacement for equipment requiring a 2.5-inch ID round-cross-section seal; verify groove dimensions and compound compatibility before installation.

Installation Notes

Installation should be performed by a qualified technician following equipment manufacturer procedures. De-energize electrical components and relieve all system pressure before disassembling any fitting, valve, or housing. Clean the groove of debris and inspect for wear before seating the new O-ring. Silicone compounds have limited oil resistance — confirm the sealing environment is compatible before installation.