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304 Stainless Steel PTFE Spiral Wound Gasket, 0.81" Bore, 900LB, Pkg Qty 36

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Industrial · SKU: AE0256219

304 Stainless Steel PTFE Spiral Wound Gasket, 0.81" Bore, 900LB, Pkg Qty 36

This spiral wound gasket is engineered for high-pressure sealing applications up to 900 lbs.

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$89.99
$2.50/each(36 pcs/pkg)

Volume Pricing - Buy More, Save More

QuantityDiscountUnit Price
1 - 10-$89.99
11 - 50-5%$85.49
51+-10%$80.99
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Quick Answer

How Buyers Should Evaluate 304 Stainless Steel PTFE Spiral Wound Gasket, 0.81" Bore, 900LB, Pkg Qty 36

This spiral wound gasket is engineered for high-pressure sealing applications up to 900 lbs. Use the quick checks below to decide whether direct checkout is enough or whether an RFQ will reduce sourcing risk.

Quick Spec Check

  • System of Measurement: Metric
  • Material Grade/Class: 304
  • Material: Stainless Steel + PTFE

Purchase Details

  • Online price starts at $89.99.
  • 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

System of MeasurementMetric
Material Grade/Class304
MaterialStainless Steel + PTFE
Thread SizeN
FinishN
Shaft/Bore Diameter0.81 in
Thickness0.177 in
Product Details

Full Description

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

Overview

Engineered for critical sealing in high-pressure and high-temperature pipeline systems, this spiral wound gasket delivers reliable performance in demanding industrial environments. It is constructed to the exacting requirements of the HG/T 20631-2009 standard, ensuring dimensional consistency and material integrity for flange connections. The unique design incorporates both an outer and inner reinforcing ring, providing exceptional mechanical strength and preventing gasket blow-out under extreme pressure cycling. This gasket is the preferred solution for creating a leak-tight seal in chemical processing, petrochemical, and power generation applications where system integrity is paramount.

Key Features

Robust 304 stainless steel inner and outer rings for maximum structural stability and crush resistance Spiral winding filled with pure PTFE (Polytetrafluoroethylene) offering superior chemical inertness Specifically designed for 900-pound class flange connections, handling high pressure and temperature D-style configuration with centering ring ensures perfect alignment during installation, preventing internal bore restriction Meets industry standard HG/T 20631-2009 for guaranteed dimensional accuracy and material compliance

Specifications

Material Grade/Class: 304 Material Construction: 304 Stainless Steel + PTFE Filler Shaft/Bore Diameter: 0.81 inches Overall Thickness: 0.177 inches Pressure Class Rating: 900LB Relevant Standard: HG/T 20631-2009 Pack Quantity: 36

Applications

Sealing high-pressure flanges in chemical and petrochemical processing pipelines Connections in power plant steam and feedwater systems General industrial piping for aggressive media where PTFE chemical resistance is required Refinery and offshore oil and gas production equipment Any ANSI/ASME B16.5 standard flange connection requiring a 900LB class spiral wound gasket

Frequently Asked Questions

What are the key specifications and materials for this spiral wound gasket?
This is a 900LB class, Type D (with inner and outer ring) spiral wound gasket per standard HG/T 20631-2009. It is constructed with a 304 stainless steel winding, a PTFE (Teflon) filler, and 304 stainless steel inner and outer rings. The bore diameter is 0.81 inches with a thickness of 0.177 inches.
What are the typical applications and use cases for this specific gasket?
This gasket is designed for high-pressure flange connections in piping systems rated for 900LB, commonly found in chemical, petrochemical, and power generation industries. The 304 stainless steel and PTFE construction provides excellent corrosion resistance, making it suitable for services involving a wide range of aggressive chemicals and temperatures up to approximately 450°F for the PTFE filler.
How is this item packaged and what is the minimum order quantity?
This gasket is sold in a standard package quantity of 36 pieces. The individual gasket size is for a DN20 (approximately 0.81 inch bore) flange connection, and the packaging is designed to protect the gaskets from damage during shipping and storage.
304 Stainless Steel PTFE Spiral Wound Gasket, 0.81" Bore, 900LB, Pkg Qty 36 | Machrio