Value Collection ZMSCTST131 Ptfe O-ring Dash 131 25 Pack

Product Description

The VALUE COLLECTION ZMSCTST131 is a Dash 131 O-ring made from polytetrafluoroethylene (PTFE), a chemically inert fluoropolymer suited for demanding sealing applications. The ring measures 1.709 inches inside diameter, 1.881 inches outside diameter, and 0.047 inches thick, with a rectangular cross section. It carries a medium hardness rating at 55 durometer and is rated for service from -65 degrees F to 500 degrees F. PTFE construction provides strong resistance to chemical attack, high temperatures, and low-friction contact surfaces, making it a practical choice where elastomeric O-rings would degrade. Each package contains 25 rings.

This O-ring is used in fluid handling, pneumatic, and process equipment where chemical resistance and wide temperature tolerance are required. Typical applications include valve stems, pump shafts, fittings, and instrumentation ports in HVAC, plumbing, chemical process, and industrial equipment. The PTFE material is suitable for use with aggressive media such as acids, solvents, and refrigerants that would attack standard nitrile or EPDM seals. Installation is performed by licensed plumbers, HVAC technicians, pipefitters, and industrial maintenance mechanics.

Key Features

• PTFE construction for broad chemical resistance and high-temperature performance
• Rated from -65 degrees F to 500 degrees F continuous service temperature
• 1.709 inches ID x 1.881 inches OD x 0.047 inches thick, Dash 131 size
• Rectangular cross section for consistent sealing contact
• 55 durometer medium hardness for reliable compression sealing
• Sold in a 25-piece package, minimum order quantity of 1

Compatibility

Designed as a standard Dash 131 O-ring replacement for valves, pumps, fittings, and fluid system components requiring a 1.709-inch ID PTFE seal.

Installation Notes

Shut down system pressure and depressurize the line before removing any seals or fittings. PTFE O-rings require proper groove sizing and seating; verify that the groove depth and width match the Dash 131 cross section before installation. Do not stretch or nick the ring during handling, as PTFE has lower elasticity than rubber compounds. Follow applicable codes such as ASME B31.1 or IPC standards for the system type being serviced.