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40 inch 7551FG01 Insulation Gasket
QS Gasket: 40 inch 7551FG01 Insulation Gasket
Name: 40 inch 7551FG01 Insulation Gasket
Standard: ASME B16.47B-WN-RF
Material: 7551FG01
Size: 40 Inch
Pressure: 150LB
Type: F
Complete Set: with G11 Sleeve and Washers and ZPS
Price: 1190 - 1399 USD
MOQ: 1 PCS
Delivery Date: 7 - 35 Days
Customization: Yes
Standard: ASME B16.47B-WN-RF
Material: 7551FG01
Size: 40 Inch
Pressure: 150LB
Type: F
Complete Set: with G11 Sleeve and Washers and ZPS
Price: 1190 - 1399 USD
MOQ: 1 PCS
Delivery Date: 7 - 35 Days
Customization: Yes
Quantity
This 40 inch 7551FG01 Insulation Gasket strictly follows the ASME B16.47B standard, is made of special non-metallic materials, and is specifically designed for flange insulation and corrosion prevention. It is equipped with a full set of G11 insulating sleeves, washers, and ZPS components, forming a reliable sealing and insulation system. It is suitable for Class 150 raised face flanges and provides stable pressure resistance. Whether for large pipelines or critical equipment, even if you need just one piece, we support custom orders for the 40 inch 7551FG01 Insulation Gasket with a delivery time of 7 to 35 days. The unit price ranges from $1,190 to $1,399, making it a cost-effective choice that combines performance and flexibility.
About the Material of 7551FG01
7551FG01 is not a general material grade like Klinger C4430 or Gylon 3500. It is an internal manufacturer's part number for a composite insulating material based on glass fiber-reinforced epoxy or special phenolic resin. The core characteristics of this material are extremely high dielectric strength and compressive strength, specifically designed for cathodic protection and electrical isolation of flanges. When you choose the 40 inch 7551FG01 Insulation Gasket, its physical properties are similar to G-10/G-11 materials: it is rigid, has very low water absorption (typically below 0.1%), can withstand continuous operating temperatures ranging from 138°C to 176°C, and does not undergo significant creep under high pressure.
7551FG01 is not a general material grade like Klinger C4430 or Gylon 3500. It is an internal manufacturer's part number for a composite insulating material based on glass fiber-reinforced epoxy or special phenolic resin. The core characteristics of this material are extremely high dielectric strength and compressive strength, specifically designed for cathodic protection and electrical isolation of flanges. When you choose the 40 inch 7551FG01 Insulation Gasket, its physical properties are similar to G-10/G-11 materials: it is rigid, has very low water absorption (typically below 0.1%), can withstand continuous operating temperatures ranging from 138°C to 176°C, and does not undergo significant creep under high pressure.
Applications
Due to the high rigidity of 7551FG01, designs incorporating the 40 inch 7551FG01 Insulation Gasket are primarily used in applications requiring extremely high insulation reliability and mechanical support:
Due to the high rigidity of 7551FG01, designs incorporating the 40 inch 7551FG01 Insulation Gasket are primarily used in applications requiring extremely high insulation reliability and mechanical support:
1. Cathodic Protection Systems: At flange connections in oil/natural gas pipelines to prevent stray currents from electrochemical corrosion.
2. High-Load Flanges: Such as subsea pipelines and high-pressure vessel connections, where the gasket itself needs to provide sufficient support without overly relying on sealing stress.
3. Power Plants and Chemical Equipment: To isolate dissimilar metals (e.g., carbon steel and stainless steel flanges) and prevent galvanic corrosion.
2. High-Load Flanges: Such as subsea pipelines and high-pressure vessel connections, where the gasket itself needs to provide sufficient support without overly relying on sealing stress.
3. Power Plants and Chemical Equipment: To isolate dissimilar metals (e.g., carbon steel and stainless steel flanges) and prevent galvanic corrosion.
Comparison with Klinger C4430, C4400, and Gylon 3500
- 7551FG01 (Rigid Insulation System): Focuses on insulation and pressure resistance. Taking the 40 inch 7551FG01 Insulation Gasket as an example, it is generally not designed for zero leakage by itself. It must be used with G11 sleeves, washers, and sealing elements. Its applicable temperature range is -196°C to +176°C. It solves electrochemical problems.
- 7551FG01 (Rigid Insulation System): Focuses on insulation and pressure resistance. Taking the 40 inch 7551FG01 Insulation Gasket as an example, it is generally not designed for zero leakage by itself. It must be used with G11 sleeves, washers, and sealing elements. Its applicable temperature range is -196°C to +176°C. It solves electrochemical problems.
- Klinger C4400/C4430 (Compressed Fiber Gasket): Focuses on"sealing."Made of synthetic fibers and NBR rubber binder, it has excellent compressibility and recovery (approx. 50%). C4430 has a continuous operating temperature of about 200°C, suitable for water, steam, and oil media. C4400 has a higher temperature resistance, continuous up to 200°C, and extreme peaks above 400°C, often regarded as an excellent non-asbestos sealing material. These solve sealing problems.
- Gylon 3500 (Modified PTFE Gasket): Focuses on"chemical resistance."It has an extremely wide temperature range (-196°C to +260°C) and resists almost all acids, bases, and solvents. However, its compressive strength (approx. 2300 PSI) is much lower than that of the 40 inch 7551FG01 Insulation Gasket (50,000 PSI), making it prone to cold flow and creep. It solves sealing problems in highly corrosive environments.
Q&A
1. Can 7551FG01 be used alone as a sealing gasket?
Generally not recommended. For example, the 40 inch 7551FG01 Insulation Gasket, being a rigid composite insulating material with low compressibility, cannot easily conform to rough flange surfaces when used alone. It typically requires PTFE or graphite-filled sealing elements to ensure leak-tightness.
1. Can 7551FG01 be used alone as a sealing gasket?
Generally not recommended. For example, the 40 inch 7551FG01 Insulation Gasket, being a rigid composite insulating material with low compressibility, cannot easily conform to rough flange surfaces when used alone. It typically requires PTFE or graphite-filled sealing elements to ensure leak-tightness.
2. Why choose 7551FG01 over G-10?
7551FG01 offers superior electrical stability and mechanical retention at high temperatures, is less prone to delamination, and is suitable for high-pressure applications with demanding insulation requirements. This is the core advantage of the 40 inch 7551FG01 Insulation Gasket.
7551FG01 offers superior electrical stability and mechanical retention at high temperatures, is less prone to delamination, and is suitable for high-pressure applications with demanding insulation requirements. This is the core advantage of the 40 inch 7551FG01 Insulation Gasket.
3. Can C4430 replace 7551FG01 for insulation?
Absolutely not. C4430 contains carbon fibers or conductive fillers and is not inherently insulating. It cannot achieve electrical isolation and cannot replace the 40 inch 7551FG01 Insulation Gasket in its role for insulation protection.
Absolutely not. C4430 contains carbon fibers or conductive fillers and is not inherently insulating. It cannot achieve electrical isolation and cannot replace the 40 inch 7551FG01 Insulation Gasket in its role for insulation protection.
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