Value Collection ZMSCS70128 Silicone O-ring Dash 128

Product Description

The VALUE COLLECTION ZMSCS70128 is a silicone O-ring with a round cross section, sized to Dash 128 standards. It measures 1.5 inches inside diameter, 1.688 inches outside diameter, and 0.0937 inches thick. With a Shore A hardness of 70 and a working temperature range of -80 degrees F to 450 degrees F, this O-ring is built for applications that demand wide thermal tolerance and reliable dry heat resistance. Plumbers, HVAC technicians, and industrial maintenance trades use this style of O-ring as a static or low-dynamic seal in fluid and gas systems. Each package contains 25 pieces.

This O-ring is suited for use in plumbing fittings, HVAC equipment, chemical handling assemblies, and general industrial sealing applications where silicone material is appropriate. Silicone provides good weather and ozone resistance, making it a reliable choice in outdoor or exposed installations. It also offers limited oil resistance and is compatible with many chemicals and solvents. This part is not FDA approved and should not be used in food-contact or pharmaceutical applications without verification against applicable standards.

Key Features

• Dash 128 standard sizing: 1.5 inches ID, 1.688 inches OD, 0.0937 inches thick
• Silicone material rated for -80 degrees F to 450 degrees F operating range
• Shore A hardness of 70 for a firm, reliable seal under compression
• Round cross section for consistent contact and predictable compression behavior
• Good weather and ozone resistance for exposed or outdoor service environments
• Sold in packages of 25 for stocking and repetitive service work

Compatibility

Designed as a standard Dash 128 silicone O-ring for use in plumbing, HVAC, and industrial sealing applications where a 1.5 inches ID round-section seal is required and silicone material is appropriate for the media and temperature conditions.

Installation Notes

Installation is typically performed by licensed plumbers, HVAC technicians, or maintenance trades. Shut off and depressurize the system before removing or replacing any O-ring seal. Inspect the groove and mating surfaces for nicks, scoring, or debris before seating the new ring. Silicone O-rings should not be lubricated with petroleum-based greases; use a silicone-compatible lubricant if lubrication is required.