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China Manufacturer Spiral Wound Gasket
QS Gasket: China Manufacturer Spiral Wound Gasket
Product: China Manufacturer Spiral Wound Gasket
Size: DN900, 36 Inch
Pressure: 300LB
Material: SS347 Inner and Outer ring
Filler:SS347 Hoop with Mica Filler
Standard: ASME B16.47 B Series
Size: DN900, 36 Inch
Pressure: 300LB
Material: SS347 Inner and Outer ring
Filler:SS347 Hoop with Mica Filler
Standard: ASME B16.47 B Series
Quantity
Manufactured in strict accordance with ASME B16.47 B Series, this gasket measures DN900 (36 inches) with a 300LB pressure rating. It features SS347 inner and outer rings, a SS347 winding hoop, and a high-purity mica filler—a combination that delivers exceptional thermal stability, corrosion resistance, and mechanical strength.
Material & Design Advantages
The SS347 stainless steel provides superior resistance to intergranular corrosion and oxidation, especially in elevated-temperature services. The mica filler, unlike conventional graphite or PTFE, offers outstanding dielectric strength and can continuously withstand temperatures up to 1000°C without degradation. This makes the gasket inherently stable under thermal cycling and pressure fluctuations. The double-ring construction (inner + outer) ensures precise centering, prevents buckling, and protects the winding from over-compression, extending service life significantly.
The SS347 stainless steel provides superior resistance to intergranular corrosion and oxidation, especially in elevated-temperature services. The mica filler, unlike conventional graphite or PTFE, offers outstanding dielectric strength and can continuously withstand temperatures up to 1000°C without degradation. This makes the gasket inherently stable under thermal cycling and pressure fluctuations. The double-ring construction (inner + outer) ensures precise centering, prevents buckling, and protects the winding from over-compression, extending service life significantly.
Key Features
- Temperature Range: Up to 1000°C (continuous service), suitable for extreme heat.
- Pressure Class: 300LB (tested per ASME standards).
- Chemical Compatibility: Resistant to a wide spectrum of acids, alkalis, solvents, and steam.
- Structural Integrity: The spiral-wound metal hoop provides resilience, while mica filler maintains sealing stress even under bolt relaxation.
- Dimensional Precision: Manufactured to tight tolerances for flange compatibility (B Series covers large-diameter flanges up to 36 inches).
- Temperature Range: Up to 1000°C (continuous service), suitable for extreme heat.
- Pressure Class: 300LB (tested per ASME standards).
- Chemical Compatibility: Resistant to a wide spectrum of acids, alkalis, solvents, and steam.
- Structural Integrity: The spiral-wound metal hoop provides resilience, while mica filler maintains sealing stress even under bolt relaxation.
- Dimensional Precision: Manufactured to tight tolerances for flange compatibility (B Series covers large-diameter flanges up to 36 inches).
Typical Applications
This gasket is widely deployed in:
- Petrochemical & Refining: Flange joints in catalytic crackers, reformers, and high-temperature transfer lines.
- Power Generation: Boiler manholes, turbine steam seals, and heat exchanger channel heads.
- Fertilizer & Syngas Plants: Where ammonia and hydrogen attack conventional fillers.
- Pharmaceutical & Specialty Chemical: Processes requiring high-purity, non-contaminating seals.
This gasket is widely deployed in:
- Petrochemical & Refining: Flange joints in catalytic crackers, reformers, and high-temperature transfer lines.
- Power Generation: Boiler manholes, turbine steam seals, and heat exchanger channel heads.
- Fertilizer & Syngas Plants: Where ammonia and hydrogen attack conventional fillers.
- Pharmaceutical & Specialty Chemical: Processes requiring high-purity, non-contaminating seals.
In oil and gas pipelines, valve bonnets, and pump casings, this gasket ensures leak-tight performance under cyclic temperature and pressure, reducing unplanned shutdowns and environmental risks.
Benefits for End Users
- Reliability: Proven in over 500 field installations across Asia, Europe, and the Middle East.
- Long Service Life: Minimizes replacement frequency—saves maintenance costs and downtime.
- Easy Installation: Standard dimensions allow drop-in replacement; no special tools or flange modifications needed.
- Supply Assurance: As a professional **China manufacturer**, we offer competitive lead times, full material traceability, and third-party inspection support.
- Reliability: Proven in over 500 field installations across Asia, Europe, and the Middle East.
- Long Service Life: Minimizes replacement frequency—saves maintenance costs and downtime.
- Easy Installation: Standard dimensions allow drop-in replacement; no special tools or flange modifications needed.
- Supply Assurance: As a professional **China manufacturer**, we offer competitive lead times, full material traceability, and third-party inspection support.
Why Choose This Gasket?
For engineers specifying large-diameter, high-temperature seals, this **spiral wound gasket** combines ASME compliance, premium metallurgy, and mica filler technology. It bridges the gap between affordability and performance—ideal for both new projects and retrofit maintenance.
For engineers specifying large-diameter, high-temperature seals, this **spiral wound gasket** combines ASME compliance, premium metallurgy, and mica filler technology. It bridges the gap between affordability and performance—ideal for both new projects and retrofit maintenance.
For detailed drawings, test reports, or custom sizes, contact our technical team. We back every gasket with a quality guarantee and responsive after-sales support.
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