Overview
The D-Type Spiral Wound Gasket with Inner and Outer Rings is a precision sealing component designed for critical flange connections in high-pressure piping systems. It conforms to the SH/T3407-2013 standard, ensuring dimensional consistency and performance reliability for industrial maintenance and installation projects. This gasket is engineered to create a robust, leak-tight seal in demanding service environments where temperature fluctuations and system pressures are common.
Key Features
Construction with a spiral wound core of 316L stainless steel and PTFE filler. Integrated 316L stainless steel inner and outer containment rings. The inner ring prevents media erosion of the winding and provides gasket centering. The outer ring offers stability during installation and prevents over-compression of the sealing element. Excellent chemical resistance provided by the inert PTFE filler material. Superior resilience and sealing performance under bolt load and system pressure. Designed for easy installation and removal during system maintenance.
Specifications
System of Measurement: Imperial Material Grade/Class: 150LB
Material
316L Stainless Steel + PTFE Thread Size: Not Applicable Finish: Not Applicable Shaft/Bore Diameter: 2.62 in Thickness: 0.177 in Nominal Pipe Size: DN65 (approximately 2.5 inch) Pressure Rating: 150LB Gasket Type: D-Type (with inner and outer rings) Filler Material: Polytetrafluoroethylene (PTFE) Winding Material: 316L Stainless Steel Ring Material: 316L Stainless Steel
Applications
Sealing flanges in chemical and petrochemical processing pipelines. High-pressure steam and utility lines in power generation facilities. Heat exchanger, valve, and pump connections across various industries. Applications requiring resistance to a wide range of corrosive chemicals. General industrial maintenance for ANSI Class 150 flange assemblies. This gasket is packaged in a convenient quantity of 10 units, providing an efficient supply for multiple joint connections or maintenance inventory.
