Overview
This D-type spiral wound gasket is a premium sealing solution designed for high-pressure, high-temperature flange connections in critical piping systems. Engineered to the HG/T20610-2009 standard, it is constructed for a nominal pipe size of 8 inches (DN200) and a formidable pressure rating of PN63, equivalent to approximately 913 PSI. The gasket's robust metal winding and filler combination ensure a leak-tight seal that maintains integrity under thermal cycling and system vibration, making it a dependable component for industrial infrastructure.
Key Features
D-type construction with integral inner and outer stainless steel rings Winding core of 304 stainless steel with flexible graphite filler Pressure rating of PN63 (approximately 913 PSI) Designed for precise fit on 8-inch (DN200) flange faces Conforms to the HG/T20610-2009 industry standard
Provides excellent resilience and recovery under bolt load
Suitable for a wide range of temperatures and media
Specifications
Material: 304 Stainless Steel (inner ring, outer ring, and winding core) Filler Material: Flexible Graphite Size: 8.74 inches outer diameter Standards: HG/T20610-2009 Connection Type: Flange Nominal Size: DN200 (8 inches) Pressure Class: PN63 Package Quantity: 2 gaskets
Applications
This gasket is specified for sealing applications in chemical and petrochemical processing. It is ideal for use in power generation plants and high-pressure steam systems. Suitable for oil and gas transmission pipelines and refinery equipment. Applicable in industrial heating systems and other process piping requiring a robust, metallic seal.
