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Stainless Steel 304 Flange Gasket, 20.47 in, PN40, Pkg Qty 2

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Industrial · SKU: AF6329159

Stainless Steel 304 Flange Gasket, 20.47 in, PN40, Pkg Qty 2

This 20. 47-inch nominal diameter flange gasket is constructed from corrosion-resistant Stainless Steel 304, suitable for high-pressure applications rated to PN40 (approximately 580 PSI).

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$169.99
$85.00/each(2 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$169.99
11 - 50-5%$161.49
51+-10%$152.99
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Quick Answer

How Buyers Should Evaluate Stainless Steel 304 Flange Gasket, 20.47 in, PN40, Pkg Qty 2

This 20. 47-inch nominal diameter flange gasket is constructed from corrosion-resistant Stainless Steel 304, suitable for high-pressure applications rated to PN40 (approximately 580 PSI). Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • Material: Stainless Steel 304
  • Size: 20.47 in
  • Standards: Meets Industry Standards

Purchase Details

  • Online price starts at $169.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 2 / Each.
  • Lead time: 2-3 weeks.

Use RFQ When

  • Use RFQ when you need bulk pricing, alternate pack sizes, or multi-SKU comparison.
  • Request support when fit, material, or substitute selection needs confirmation before order.
  • Escalate to sourcing when timeline, freight, or stocking strategy matters more than one-off checkout speed.

Technical Specifications

MaterialStainless Steel 304
Size20.47 in
StandardsMeets Industry Standards
Connection TypeFlange
Reel TypeNot Applicable
Hose CapacityNot Applicable
Mount TypeNot Applicable
Product Details

Full Description

Application context, construction notes, and selection details for evaluating fit before purchase or repeat ordering.

Overview

This D-type metal wound flange gasket is engineered for high-integrity sealing in critical industrial piping and pressure vessel applications. It features a robust construction with inner and outer containment rings, designed to withstand extreme pressures and thermal cycling while preventing leakage. Manufactured from Stainless Steel 304, it offers excellent corrosion resistance for a wide range of media. The gasket is produced to recognized industry standards, ensuring dimensional accuracy and reliable performance in demanding environments such as chemical processing, oil and gas, and power generation.

Key Features

Constructed from corrosion-resistant Stainless Steel 304 for durability. D-shaped, spiral-wound design with graphite filler for resilient sealing. Integrated inner and outer reinforcing rings for enhanced crush resistance and installation stability. Rated for high-pressure service up to PN40 (approximately 580 PSI). Suitable for a wide temperature range due to metal and graphite composition. Manufactured to comply with specific industry dimensional and material standards. Prevents flange face damage by providing a controlled sealing surface.

Specifications

Material: Stainless Steel 304 (Windings, Inner Ring, Outer Ring) Nominal Size: 20.47 inches Pressure Rating: PN40 Design Standard: D-type with Inner and Outer Rings Filler Material: Flexible Graphite Package Quantity: 2 Gaskets

Applications

Sealing high-pressure flanges in chemical and petrochemical plants. Connections in refinery and offshore oil and gas pipelines. Power generation steam and feedwater systems. Industrial processing equipment requiring reliable, leak-free joints. Pressure vessel manways and connections.

Frequently Asked Questions

What are the exact specifications and pressure rating of this flange gasket?
This is a D-type spiral wound gasket with inner and outer rings, made from Stainless Steel 304 with a graphite filler. It is designed for a 20.47 inch (DN500) flange connection and is rated for PN40, which corresponds to a pressure rating of approximately 580 PSI at 100°F. It conforms to the HG/T20610-2009 standard (D2222).
What are the typical applications or use cases for this specific gasket?
This gasket is designed for high-pressure, high-temperature sealing in industrial piping systems using 20.47 inch flanges. Typical applications include chemical processing, petrochemical, power generation, and other heavy industrial environments where a robust, metal-reinformed seal is required for steam, oil, gas, or aggressive media.
How is this gasket packaged, and what is the minimum order quantity?
This gasket is packaged and sold as a set of 2 pieces per pack. The packaging protects the gasket from damage during shipping and storage. Please note the listed price and order quantity are typically for one pack containing the two gaskets.
Stainless Steel 304 Flange Gasket, 20.47 in, PN40, Pkg Qty 2 | Machrio