Overview
The D-Type Spiral Wound Gasket with Inner and Outer Rings is a high-performance sealing solution engineered for critical flange connections in demanding industrial piping and pressure vessel systems. Manufactured to the exacting SH/T3407-2013 standard, this gasket is designed to create a reliable, leak-tight seal under high pressure and temperature cycling conditions. Its robust metal-wound construction ensures long-term integrity in services where sealing failure is not an option.
Key Features
Engineered to SH/T3407-2013 industry standard for dimensional consistency and performance D-Type configuration includes integral inner and outer containment rings for enhanced stability
Spiral wound design provides superior resilience and sealing force recovery Construction combines the strength of metal with the sealing properties of a non-metallic filler Inner ring prevents gasket blow-out and protects the winding from internal media
Outer ring centers the gasket on the flange and provides handling protection
Specifications
Gasket Type: D-Type Spiral Wound with Inner and Outer Rings Standard: SH/T3407-2013 Nominal Pipe Size: 8 inches (DN200) Pressure Class: 300 LB Gasket Designation: D2222 Winding Metal: 304 Stainless Steel Filler Material: Flexible Graphite Inner/Outer Ring Material: 304 Stainless Steel Quantity: 1 Gasket
Applications
Sealing flanges in chemical and petrochemical processing plants High-pressure steam lines and power generation systems
Refinery and hydrocarbon processing equipment Heat exchangers, reactors, and pressure vessels Applications requiring resistance to thermal cycling and high bolt loads
