Overview
The D-Type Metallic Spiral Wound Gasket with Inner and Outer Rings is engineered for sealing high-pressure, high-temperature flanged connections in critical process piping systems. Manufactured in compliance with the ASME B16.20-2007 standard, this gasket is designed for nominal pipe size 1 inch (NPS 1") and a pressure class of 900 pounds. Its robust construction ensures a reliable, leak-tight seal in demanding industrial environments where system integrity is paramount.
Key Features
ASME B16.20-2007 compliant design for guaranteed dimensional and performance standards D-Type configuration with both inner and outer rings for enhanced stability and compression control Metal winding and filler combination creates a resilient, self-compensating seal Outer ring provides alignment during flange assembly and prevents gasket over-compression Inner ring offers internal blow-out protection and stabilizes the winding
Suitable for extreme service conditions including high pressure and thermal cycling
Specifications
Gasket Type: D-Type Spiral Wound with Inner and Outer Rings Standard: ASME B16.20-2007 Nominal Pipe Size: 1 inch (DN25) Pressure Class: 900LB Outer Ring Material: Stainless Steel 304 or 316L Filler Material: Flexible Graphite Inner Ring Material: Stainless Steel 316L System of Measurement: Imperial (NPS)
Applications
Sealing flanges in chemical and petrochemical processing plants High-pressure steam lines and power generation systems Oil and gas pipelines, refineries, and offshore platforms High-temperature heat exchanger and boiler connections Critical service valves, pumps, and reactor fittings
