Overview
This D-type spiral wound gasket is engineered for high-integrity sealing in demanding industrial flanged connections. It features a robust construction with both inner and outer retaining rings, which provide secure installation, prevent over-compression, and ensure proper alignment within the bolt circle. Manufactured to the HG/T20610-2009 standard, this gasket is designed for DN65 nominal pipe size systems operating at pressure ratings up to 580 PSI (PN40). Its reliable performance makes it a critical component for maintaining leak-free joints in high-pressure and high-temperature service.
Key Features
D-type design with integrated inner and outer retaining rings Constructed from corrosion-resistant Stainless Steel 304
Graphite filler provides excellent thermal conductivity and seal resilience
Suitable for a broad range of temperatures and media Prevents gasket blow-out and ensures proper centering in the flange Conforms to industry-standard dimensional specifications for DN65 piping
Specifications
System of Measurement: Metric (converted to Imperial for key dimensions) Material Grade/Class: 304
Material
Stainless Steel Thread Size: Not Applicable Finish: Uncoated Shaft/Bore Diameter: 3.03 inches Outer Diameter: 5.00 inches Thickness: 0.177 inches Pressure Rating: 580 PSI (PN40) Construction: Stainless Steel 304 winding with graphite filler, Stainless Steel 304 inner and outer rings Standard: HG/T20610-2009 Package Quantity: 6 pieces
Applications
High-pressure process piping in chemical and petrochemical plants
Power generation and utility systems
Oil and gas transmission and refining pipelines
Industrial heating and boiler systems Any flanged connection requiring a reliable, metallic gasket solution for PN40 service
