Value Collection ZMSCS70159 Silicone O-ring Dash 159 5in Id

Product Description

The VALUE COLLECTION ZMSCS70159 is a Dash 159 silicone O-ring with a round cross section, designed for static and dynamic sealing applications across HVAC, plumbing, and industrial service work. It measures 5 inches inside diameter, 5.188 inches outside diameter, and 0.0937 inches thick. The silicone compound delivers a working temperature range of -80 degrees F to 450 degrees F, making it well-suited for high-heat and wide-swing thermal environments. The material also provides good resistance to weathering and ozone exposure. Licensed trades and maintenance technicians install this type of O-ring as a replacement seal in valves, flanges, pumps, and piping connections.

This O-ring is used in residential and light commercial applications where silicone sealing compounds are specified. The Dash 159 designation conforms to standard AS568 sizing, simplifying cross-reference and replacement sourcing. Typical install scenarios include sealing threaded or flanged joints in HVAC equipment, hydronic systems, chemical-handling lines, and general plumbing assemblies where exposure to dry heat, ozone, or moderate chemical contact is expected. Each package contains 5 O-rings.

Key Features

• Silicone compound rated for -80 degrees F to 450 degrees F continuous service
• Round cross section with Dash 159 AS568 standard sizing for straightforward cross-reference
• Good weather and ozone resistance for outdoor or ambient-exposed installations
• Compatible with oils, chemicals, and solvents in limited-contact applications
• Hard durometer rating (70 Shore A) for dimensional stability under compression
• Sold in packs of 5 with a minimum order quantity of 1

Compatibility

Designed as a standard Dash 159 replacement O-ring for any application requiring an AS568-compliant seal with 5 inch inside diameter and silicone material construction.

Installation Notes

O-ring installation should be performed by a qualified technician following applicable codes such as NEC, IPC, or IFGC depending on the system being serviced. Isolate and de-pressurize the system and allow components to cool before replacing any seals. Inspect the O-ring groove for nicks, corrosion, or debris before seating the new ring. Avoid rolling or twisting the O-ring during installation to prevent premature seal failure.