4" RING SST SST IRD LESS FILL AND GAU. 1/2" CONN. BUNA CYL.

This 4-inch stainless steel ISO-ring with integrated relief device (IRD) offers overpressure protection without fill fluid or gauge for flexible configurations. Featuring Buna-N cylinder seals and 1/2 inch connection, this ISO-ring provides customization options for diverse industrial applications.

Key Features:

• Size: 4 inch ISO connection
• Body Material: Stainless steel (SST) for durability
• Flange Material: Stainless steel construction
• IRD: Integrated relief device for safety
• Configuration: No fill fluid or gauge (custom-ready)
• Connection: 1/2 inch gauge connection
• Cylinder Seal: Buna-N (natural rubber) for general service

Benefits:

• Stainless steel provides excellent corrosion resistance
• IRD ensures automatic overpressure protection
• No fill or gauge allows custom fluid and instrumentation selection
• Buna-N seals offer excellent petroleum product compatibility
• 1/2 inch connection fits heavy-duty pressure gauges
• Flexible configuration for specialized requirements

Perfect for petroleum terminals, chemical facilities, and industrial loading systems requiring customizable pressure monitoring with overpressure protection in 4-inch ISO connections.