Overview
This 18-inch spiral wound gasket is engineered for high-integrity sealing in demanding industrial piping and pressure vessel applications. Manufactured in strict compliance with the HG/T20610-2009 standard, it is designed to withstand operating pressures up to 580 PSI. The gasket's robust construction utilizes alternating layers of corrosion-resistant stainless steel and flexible graphite filler, creating a resilient seal that accommodates flange irregularities and thermal cycling. The inclusion of inner and outer reinforcing rings provides critical stability, prevents over-compression, and aids in proper installation alignment, ensuring a reliable, long-term seal in critical service environments.
Key Features
Manufactured to HG/T20610-2009 industry standard for dimensional consistency and performance Pressure rating of PN40, suitable for services up to 580 PSI Dual reinforcing ring design (inner and outer) for gasket stability and bolt load distribution Sealing element constructed with alternating plies of 304 and 316L stainless steel windings
Flexible graphite filler provides excellent thermal conductivity and seal resilience
Suitable for use in both indoor and outdoor installations Corrosion-resistant 304/316L stainless steel construction enhances durability in harsh conditions
Specifications
Standards: HG Nominal Size: 18 inches (DN450) Pressure Class: PN40 (580 PSI) Gasket Type: Spiral Wound with Inner and Outer Rings Metal Windings: 304 Stainless Steel Filler Material: Flexible Graphite Reinforcing Rings: 316L Stainless Steel Chemical Base: Graphite Sealant Type: Spiral Wound Gasket Indoor/Outdoor Use: Both Paintable: No Pack Size: 1 unit
Applications
High-pressure process piping in chemical and petrochemical plants Flange connections on heat exchangers, reactors, and pressure vessels
Power generation steam and feedwater systems
Oil and gas pipeline and refinery applications General industrial service on raised face and flat face flanges
