Value Collection ZMSCS70235 Silicone O-ring Dash 235 10-pack

Product Description

The VALUE COLLECTION ZMSCS70235 is a Dash 235 silicone O-ring designed for static and dynamic sealing applications across HVAC, plumbing, and industrial equipment. It measures 3.125 inches inside diameter, 3.375 inches outside diameter, and 0.125 inches thick, with a round cross section. The silicone compound carries a Shore A hardness of 70 and is rated for a wide service temperature range of -80 degrees F to 450 degrees F. Each order includes a pack of 10 rings. Licensed techs and plumbers reach for silicone O-rings when the application demands dry heat resistance and reliable sealing in outdoor or ozone-exposed environments.

This O-ring is suited for sealing joints, ports, and fittings in residential and light commercial systems where exposure to wide temperature swings, weathering, and ozone is a concern. Typical install scenarios include HVAC equipment access panels, pump housings, valve bodies, and fluid system connections. The silicone material offers good resistance to oils, chemicals, and solvents at moderate concentrations, though its oil resistance is rated limited compared to nitrile compounds. Installers working on equipment with dry heat or outdoor exposure will find this ring a practical choice in that size range.

Key Features

• Dash 235 standard size — 3.125 inches ID, 3.375 inches OD, 0.125 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F for wide-range thermal performance
• Shore A hardness of 70 for a firm, reliable seat under compression
• Round cross section for consistent sealing in standard O-ring grooves
• Resistant to weathering and ozone — suitable for outdoor equipment applications
• Pack of 10 rings per order for job-site stocking

Compatibility

Designed as an OEM-style replacement or service seal for any application calling for a Dash 235 silicone O-ring with a 3.125-inch inside diameter and 0.125-inch cross section thickness.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or mechanical contractors. Always depressurize and de-energize the system before removing the old O-ring and seating the replacement. Clean the groove of debris and old sealant before installation; avoid using petroleum-based lubricants with silicone O-rings unless confirmed compatible with the compound. Follow applicable IPC or IFGC guidelines for the system type being serviced.