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Spiral Wound Gasket, 4 Inch, 304 Steel & Graphite, 150 LB Flange, Pkg Qty 36

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Industrial · SKU: AE0252640

Spiral Wound Gasket, 4 Inch, 304 Steel & Graphite, 150 LB Flange, Pkg Qty 36

This 4-inch spiral wound gasket is engineered for 150 LB flanges, providing a reliable seal in high-pressure piping systems.

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$99.99
$2.78/each(36 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$99.99
11 - 50-5%$94.99
51+-10%$89.99
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Quick Answer

How Buyers Should Evaluate Spiral Wound Gasket, 4 Inch, 304 Steel & Graphite, 150 LB Flange, Pkg Qty 36

This 4-inch spiral wound gasket is engineered for 150 LB flanges, providing a reliable seal in high-pressure piping systems. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • Standards: HG
  • Chemical Base: Graphite
  • Sealant Type: Spiral Wound Gasket

Purchase Details

  • Online price starts at $99.99.
  • Minimum order quantity: 1 unit.
  • Pack quantity: 36 / 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

StandardsHG
Chemical BaseGraphite
Sealant TypeSpiral Wound Gasket
Indoor/Outdoor UseIndoor
PaintableNo
Product Details

Full Description

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

Overview

This 4-inch spiral wound gasket is engineered for high-performance sealing in demanding industrial piping and pressure vessel systems. Designed specifically for 150 LB flanges, it creates a reliable, leak-tight seal capable of withstanding significant pressure, temperature fluctuations, and a wide range of chemical media. Manufactured in compliance with the HG/T 20631-2009 standard, this gasket ensures dimensional consistency and material integrity for predictable performance in critical applications. Its robust construction is intended for professional use in controlled environments.

Key Features

Engineered for 150 LB pressure class flanges, ensuring proper fit and sealing force. Constructed with a 304 stainless steel winding for excellent corrosion resistance and mechanical strength. Features a graphite filler offering superior thermal stability and resilience across a wide temperature range. Includes a sturdy 304 stainless steel outer ring (C2220 configuration) for precise centering during installation. The outer ring prevents gasket blow-out and protects against over-compression, extending service life. Provides reliable chemical resistance suitable for many industrial process fluids. Manufactured to precise HG standards for guaranteed interchangeability and compliance.

Specifications

Sealant Type: Spiral Wound Gasket Nominal Size: 4 Inch (DN40) Pressure Class: 150 LB Construction: C2220 (With Outer Ring) Winding Material: 304 Stainless Steel Filler Material: Graphite Outer Ring Material: 304 Stainless Steel Applicable Standard: HG/T 20631-2009 Intended Use: Indoor Surface Compatibility: Non-paintable Package Quantity: 36

Applications

Sealing flanges in chemical and petrochemical processing pipelines. General industrial plumbing and high-pressure hydraulic systems. Power generation and thermal utility systems. Oil and gas transmission and refining applications. Heating, ventilation, and industrial boiler systems. Use on pumps, valves, heat exchangers, and vessel manways.

Frequently Asked Questions

What are the exact dimensions and pressure rating for this 4-inch spiral wound gasket?
This gasket is designed for a 4-inch nominal pipe size (DN40) flange and is rated for 150 LB pressure class service. It is constructed with a C2220 configuration, featuring inner and outer rings made from 304 stainless steel with a flexible graphite filler for a reliable seal.
What are the typical applications or use cases for this specific gasket?
This gasket is suitable for sealing raised face flanges in piping systems handling steam, oil, gas, and various chemical services at moderate temperatures and pressures. Its 304 stainless steel and graphite construction makes it ideal for general industrial and chemical processing applications where corrosion resistance is required.
How is this gasket packaged, and what is the minimum order quantity?
This gasket is sold in a package quantity of 36 pieces. Each gasket is individually packaged or bundled to prevent damage during shipping and storage, ensuring you receive components in ready-to-install condition.
Spiral Wound Gasket, 4 Inch, 304 Steel & Graphite, 150 LB Flange, Pkg Qty 36 | Machrio