Value Collection ZMSCS70380 Silicone O-ring Dash 380

Product Description

The VALUE COLLECTION ZMSCS70380 is a Dash 380 silicone O-ring designed for static and dynamic sealing applications across a wide range of industrial and mechanical systems. With an inside diameter of 11.5 inches, an outside diameter of 11.875 inches, and a thickness of 0.1875 inches, this large-format ring seats into standard Dash 380 grooves. The round cross section and 70 durometer hardness deliver consistent compression and reliable sealing. A working temperature range of -80 degrees F to 450 degrees F makes this ring well suited for environments demanding broad thermal tolerance and good dry heat resistance. Licensed tradespeople and maintenance technicians install this part during pump, valve, flange, and cover assembly service.

This O-ring is used in applications where exposure to oils, chemicals, and solvents is expected and where good weather and ozone resistance is required. Its silicone compound is particularly appropriate for high-heat environments such as oven seals, heating equipment access panels, large pump housings, and fluid system covers. The Dash 380 sizing is a recognized standard dimension, making this ring straightforward to specify for replacement or new-assembly work in HVAC, plumbing, pool, and general industrial contexts. Note that silicone offers limited oil resistance compared to Buna-N or Viton compounds, so verify fluid compatibility before installation.

Key Features

• Wide temperature range: -80 degrees F to 450 degrees F suits high-heat and cold-environment service
• Silicone compound provides good weather and ozone resistance
• 70 durometer hardness rating for consistent compression and groove fit
• Standard Dash 380 sizing for straightforward cross-reference and replacement
• Round cross section ensures uniform sealing contact
• Compatible with oils, chemicals, and solvents — verify specific fluid compatibility before use

Compatibility

Designed as a standard Dash 380 O-ring replacement for any groove machined to the Dash 380 dimension standard, including large pump housings, valve bodies, flanges, and access covers in HVAC, plumbing, pool, and general industrial equipment.

Installation Notes

Installation is performed by qualified mechanics, plumbers, or HVAC technicians as part of pump, valve, or flange disassembly and reassembly. Shut down and depressurize the system completely before removing the old O-ring. Clean the groove of debris and inspect for wear or damage before seating the new ring. Apply a compatible lubricant to ease installation and avoid pinching or rolling the cross section during assembly.