Get top-quality spiral wound gaskets from South Eastern Gaskets, designed for reliable sealing in high-temperature and high-pressure environments.
Spiral wound gaskets are a reliable solution for sealing applications in industries where high temperatures, pressures, and harsh media are prevalent. These semi-metallic gaskets, created by spirally winding V-shaped metal strips with non-metallic fillers, offer impressive sealing capabilities. Reinforced with internal and external solid metal rings, they provide added strength and resilience, making them ideal for a wide range of demanding environments.
Optimising Spiral Wound Gaskets for High-Temperature Sealing Applications
Spiral wound gaskets are highly durable in high-temperature sealing environments due to their combination of metal and non-metallic materials. Their flexibility allows them to withstand thermal expansion, pressure fluctuations, and chemical exposure while maintaining a reliable seal. This makes them essential for industries like chemical processing, petrochemicals, and power generation.
Spiral wound gaskets’ key features include:
✓ High Resistance to Temperature: Designed to function in temperatures ranging from cryogenic levels to high heat, maintaining a reliable seal.
✓ Durable Pressure Endurance: Capable of sealing under extreme pressures, even in high-stress environments.
✓ Chemical Resistance: Resistant to a variety of aggressive chemicals and media, ensuring long-lasting performance.
✓ Customisable Design: Available in various configurations, allowing for tailored solutions to meet specific sealing needs.
Material Selection in Spiral Wound Gaskets for Heat Resistance
Spiral Wound Gaskets (SWGs) are commonly used in high-temperature and high-pressure applications, such as heat exchangers, boilers, and piping systems. The heat resistance of a spiral wound gasket depends on the combination of metal winding material and filler material.
1. Metal Winding Material Options (for Heat Resistance): The metal winding provides structural integrity and resilience. The most common heat-resistant options include:
• Stainless Steel (SS 304, SS 316, SS 321, SS 347) – Suitable for temperatures up to 870°C (SS 321 and SS 347 offer better thermal stability).
• Inconel 600 & Inconel 625 – Excellent for extreme heat, resistant up to 1,093°C.
• Hastelloy C276 – Highly corrosion and heat-resistant, used up to 1,100°C in extreme conditions.
• Monel 400 – Suitable for temperatures up to 820°C, offering good thermal stability in acidic environments.
• Titanium – Used in highly corrosive and high-temperature applications, typically up to 600°C.
2. Filler Material Options (for Heat Resistance): The filler material enhances sealing performance and must withstand high temperatures. Common choices include:
• Graphite – The most widely used for heat resistance, capable of withstanding up to 550°C (oxidising environments) and 870°C (non-oxidising environments).
• PTFE (Polytetrafluoroethylene) – Typically used for chemical resistance, but has a lower heat resistance of 260°C.
• Mica (Phlogopite or Vermiculite) – Excellent for extreme heat conditions, withstanding up to 1,000°C in non-oxidising environments. Ideal for fire-safe applications.
• Ceramic – Used in extreme high-temperature applications, resistant up to 1,200°C, though not commonly used due to brittleness.
Choosing the Right Combination
• For temperatures up to 550°C → Stainless Steel + Graphite
• For temperatures up to 870°C → Stainless Steel + Graphite (in non-oxidising conditions)
• For extreme temperatures (900°C – 1,200°C) → Inconel/Hastelloy + Mica or Ceramic
Consult with South Eastern Gaskets for All Your Gasketing Needs
South Eastern Gaskets is a family-owned manufacturer and supplier of high-quality gaskets, seals, washers, and other sealing products. We deliver custom sealing solutions that meet the highest standards, and all our products exceed ISO 9002 standards, backed by two fully-equipped factories in Braeside, Victoria, and Lonsdale, South Australia. Upgrade now to premium-quality gaskets that deliver exceptional performance in demanding conditions.