Value Collection ZMSCS70207 Silicone O-ring Dash 207 50-pack

Product Description

The VALUE COLLECTION ZMSCS70207 is a Dash 207 silicone O-ring designed for static and dynamic sealing applications that demand reliable performance across a wide temperature range. Manufactured from silicone with a Shore hardness of 70, this O-ring measures 0.563 inches inside diameter, 0.813 inches outside diameter, and 0.125 inches thick with a round cross section. Its silicone compound delivers good dry heat resistance and strong weather and ozone resistance, making it a dependable choice for HVAC, plumbing, refrigeration, and general industrial sealing tasks. Each package contains 50 O-rings.

This O-ring is suited for residential and commercial applications where operating temperatures span from -80 degrees F to 450 degrees F. It performs well in environments exposed to chemicals, solvents, and oils, though oil resistance is limited and should be evaluated against the specific fluid being sealed. Typical install scenarios include sealing threaded fittings, valve bodies, pump housings, and sensor ports across HVAC, pool, and plumbing systems. Trade professionals use this ring as a direct drop-in seal wherever a Dash 207 O-ring is called out on a parts diagram or service bulletin.

Key Features

• Dash 207 standard sizing: 0.563 inches ID, 0.813 inches OD, 0.125 inches thick
• Silicone compound rated from -80 degrees F to 450 degrees F operating range
• Shore hardness 70 round cross section for consistent groove seating
• Good weather and ozone resistance for outdoor and exposed installations
• Compatible with oils, chemicals, and solvents — note limited oil resistance
• Sold in a 50-piece package for bench stock and service van inventory

Compatibility

Designed as a standard Dash 207 replacement O-ring for any application specifying a 0.563 inches ID by 0.813 inches OD by 0.125 inches thick silicone seal with a round cross section.

Installation Notes

Installation is typically performed by licensed HVAC technicians, plumbers, or pool service professionals. Always depressurize and drain the system before removing or replacing any O-ring seal. Lightly lubricate the O-ring with a compatible lubricant before seating it in the groove to prevent cutting or rolling during assembly. Do not use petroleum-based lubricants with silicone O-rings unless confirmed compatible with the silicone compound.