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Stainless Steel 304 PTFE Spiral Wound Gasket, 20.71 in ID

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Industrial · SKU: AE0256484

Stainless Steel 304 PTFE Spiral Wound Gasket, 20.71 in ID

This industrial-grade spiral wound gasket is engineered for high-pressure sealing in demanding flange connections.

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$59.99

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QuantityDiscountUnit Price
1 - 10-$59.99
11 - 50-5%$56.99
51+-10%$53.99
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Quick Answer

How Buyers Should Evaluate Stainless Steel 304 PTFE Spiral Wound Gasket, 20.71 in ID

This industrial-grade spiral wound gasket is engineered for high-pressure sealing in demanding flange connections. 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 + PTFE
  • Size: 20.71 in ID x 24.41 in OD
  • Standards: Meets Industry Standards

Purchase Details

  • Online price starts at $59.99.
  • Minimum order quantity: 1 unit.
  • Availability: Contact for Availability.
  • 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 + PTFE
Size20.71 in ID x 24.41 in OD
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 industrial spiral wound gasket is engineered for high-pressure, high-temperature sealing in critical flange connections. Designed to meet rigorous industry standards, it provides a reliable, long-lasting seal in demanding process environments. Its construction combines the strength of metal with the sealing properties of a non-metallic filler, creating a resilient gasket that accommodates flange rotation and surface irregularities. This specific configuration is tailored for DN500 PN16 piping systems, making it a vital component for maintaining system integrity and preventing leaks in large-diameter pipelines.

Key Features

Constructed with a spiral wound design for superior resilience and seal Features a core of Stainless Steel 304 windings for strength and temperature resistance Utilizes a PTFE (Polytetrafluoroethylene) filler for exceptional chemical resistance Includes inner and outer retaining rings for precise placement and handling stability Engineered to handle variable pressures and thermal cycling Provides a reliable seal for flanged connections in aggressive service environments

Specifications

Material: Stainless Steel 304 windings with PTFE filler Inner Diameter: 20.71 inches Outer Diameter: 24.41 inches Pressure Rating: PN16 (approximately 232 PSI) Design Standard: Conforms to common industry specifications for spiral wound gaskets Configuration: Style D with inner and outer guide rings Pack Quantity: 1 unit

Applications

Sealing large-diameter flanges in chemical and petrochemical processing High-pressure piping systems in power generation facilities Industrial fluid handling systems requiring chemical inertness Heat exchangers, reactors, and vessel manways General industrial maintenance and repair for critical seal points

Frequently Asked Questions

What are the exact dimensions and pressure rating of this spiral wound gasket?
This gasket has an inner diameter (ID) of 20.71 inches and an outer diameter (OD) of 24.41 inches. It is rated for a nominal pressure of PN16, which corresponds to approximately 232 PSI at 100°F, and is manufactured to the GB/T4622.2-2003 standard.
For what types of applications and flange connections is this gasket suitable?
This gasket is designed for standard flange connections in piping systems handling corrosive media, steam, or hydrocarbons. The 304 stainless steel and PTFE (Teflon) filler construction makes it ideal for chemical, petrochemical, and high-purity applications where chemical resistance and a reliable seal are required.
How is this gasket packaged and sold? Is a single gasket sufficient for my flange pair?
This specific item is sold as a single unit (1 piece). It is packaged individually to prevent damage during shipping. For a standard flanged connection, you will need one gasket per flange pair, so please ensure your order quantity matches the number of joints you need to seal.