Overview
This D-type spiral wound gasket is engineered for high-integrity sealing in critical flanged connections. It is specifically constructed to handle elevated pressures and temperatures within industrial piping systems, including those in chemical processing, power generation, and oil and gas applications. The design incorporates a centering ring for precise alignment during installation, preventing seal blow-out and ensuring optimal performance under dynamic conditions. Each package contains two gaskets, providing a convenient supply for maintenance or assembly projects.
Key Features
Robust D-type construction with inner and outer centering rings Primary sealing element wound from 304 stainless steel with a PTFE (polytetrafluoroethylene) filler Inner and outer reinforcing rings also constructed from 304 stainless steel Engineered for a pressure rating of approximately 360 PSI (PN25) Suitable for high-temperature service compatible with the materials
Provides excellent chemical resistance due to the inert PTFE filler
Prevents leakage in critical flange connections
Specifications
Material: 304 Stainless Steel (winding and rings) with PTFE Filler Size: 18.5 inch Nominal Diameter (DN400) Pressure Rating: PN25 (Approximately 360 PSI) Standards: Manufactured to HG/T20610-2009 industry specifications Connection Type: Flanged Gasket Type: Spiral Wound, D-Style with Inner and Outer Rings Package Quantity: 2
Applications
Sealing high-pressure pipe flanges in chemical and petrochemical plants
Connections in power generation and steam systems
Critical process piping in oil and gas refineries Industrial fluid handling systems requiring reliable, leak-free performance Maintenance and repair of existing flanged infrastructure meeting the specified standards
