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
