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Industrial · SKU: AE0254072
HG Standard 4 Inch NPS Graphite Spiral Wound Gasket, Pkg Qty 20
This 4-inch NPS spiral wound gasket is manufactured to the HG standard for reliable sealing in stainless steel piping systems.
Volume Pricing - Buy More, Save More
| Quantity | Discount | Unit Price |
|---|---|---|
| 1 - 10 | - | $179.99 |
| 11 - 50 | -5% | $170.99 |
| 51+ | -10% | $161.99 |
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Quick Answer
How Buyers Should Evaluate HG Standard 4 Inch NPS Graphite Spiral Wound Gasket, Pkg Qty 20
This 4-inch NPS spiral wound gasket is manufactured to the HG standard for reliable sealing in stainless steel 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
- Thread Size Range: 4 inch NPS
Purchase Details
- Online price starts at $179.99.
- Minimum order quantity: 1 unit.
- Pack quantity: 20 / 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
| Standards | HG |
| Chemical Base | Graphite |
| Thread Size Range | 4 inch NPS |
| Temperature Range | Insufficient Data |
| For Pipe Material | Stainless Steel |
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-performance sealing in stainless steel piping systems. Manufactured to the stringent HG/T20610-2009 standard, it is designed for a nominal pipe size of 4 inches NPS and a pressure class rating of PN16. The gasket's robust, multi-layer construction ensures a reliable, leak-proof seal capable of withstanding the thermal cycling and mechanical stress common in demanding process environments. Each package contains 20 units, providing a cost-effective and efficient solution for maintenance projects or new installations requiring multiple seals.
Key Features
Manufactured to HG/T20610-2009 industry standard for dimensional consistency and performance Engineered for a pressure rating of PN16 (approximately 232 PSI) Features a durable spiral wound design with inner and outer stainless steel retaining rings Primary sealing element consists of a compressible, high-purity graphite filler Windings are constructed from corrosion-resistant 316L stainless steel Outer centering ring is made from 304 stainless steel for structural integrity The layered metal-and-filler construction accommodates flange face imperfections Provides excellent sealing performance in high-temperature and high-pressure service
Specifications
Standard: HG/T20610-2009 Nominal Pipe Size: 4 inch NPS Pressure Class: PN16 Gasket Design: Style D with Inner and Outer Rings Winding Material: 316L Stainless Steel Filler Material: Flexible Graphite Outer Ring Material: 304 Stainless Steel Inner Ring Material: 316L Stainless Steel Package Quantity: 20 units
Applications
General chemical processing and petrochemical plants Pharmaceutical and food-grade stainless steel piping systems Power generation and utility services Oil and gas production and refining HVAC and industrial refrigeration systems Any application requiring a reliable seal for 4-inch NPS, PN16 stainless steel flanges