Find High-Quality Spiral Wound Gaskets from a Leading Supplier for Your Industrial Needs

Spiral wound gaskets are fundamental sealing components used extensively in industrial piping and pressure vessel systems. They are designed to create a reliable, leak-tight seal under varying conditions of temperature, pressure, and media. At Kaxite Sealing, we engineer and manufacture premium spiral wound gaskets that meet and exceed the rigorous demands of global industries, from oil and gas to chemical processing and power generation.

What are Spiral Wound Gaskets?

A spiral wound gasket is a semi-metallic gasket constructed by winding a pre-formed metal strip and a filler material (such as graphite, PTFE, or ceramic) in a spiral (V-shaped) formation around a central metal core. This unique construction is then housed within an outer and/or inner metal centering ring. This design combines the resilience and sealing properties of the filler with the strength and structural integrity of the metal windings, making it exceptionally versatile.

Key Advantages of Kaxite Spiral Wound Gaskets

• Exceptional Resilience & Recovery: The spiral wound structure allows the gasket to compensate for flange rotation, thermal cycling, and system vibrations, maintaining a tight seal.
• Wide Temperature & Pressure Range: Suitable for applications from deep cryogenic temperatures up to 1000°C (1832°F) and pressures from vacuum to over 20,000 psi, depending on material selection.
• Chemical Compatibility: By selecting the appropriate metal and filler combination, Kaxite gaskets can handle a vast array of aggressive chemicals and solvents.
• Standard & Custom Sizes: We produce gaskets compliant with ASME B16.20, API 6A, DIN, and other international standards, as well as custom dimensions for specific applications.
• Reliable Sealing Performance: The multiple sealing points created by the spiral layers ensure a highly effective, leak-free barrier.

Detailed Product Parameters & Specifications

Kaxite Sealing spiral wound gaskets are defined by precise engineering specifications. Below are the key parameters that define our product range.

1. Standard Materials of Construction

2. Standard Dimensions & Pressure Classes

3. Temperature & Pressure Ratings

Note: Ratings are dependent on material combination. The table below provides general guidelines.

Kaxite Sealing Spiral Wound Gaskets: FAQs

How do I select the right spiral wound gasket for my application?

Selection requires evaluating four key factors: 1) Flange Details: Standard (ASME, DIN, etc.), pressure class, facing finish (e.g., serrated), and dimensions. 2) Service Conditions: Maximum and minimum operating temperature, pressure (including pressure cycles), and medium (chemical composition). 3) Material Compatibility: The metal and filler must resist corrosion from the medium and suit the temperature. 4) Special Requirements: Consider thermal cycling, vibration, and potential for fire-safe requirements (like API 6FB test). Consulting Kaxite Sealing's engineering team with your application data is the most reliable method.

What is the difference between an inner ring, an outer ring, and no ring?

The rings, also called guide or centering rings, serve specific functions. An Outer Ring is standard; it centers the gasket in the bolt circle, protects the windings from damage, and helps control bolt torque. An Inner Ring (or inner guard ring) is used when the process media is highly turbulent or erosive, to protect the inner windings from damage. It's also recommended for vacuum service. "No ring" configurations (windings only) are used in confined spaces where standard ring thickness is not permissible, but they require careful installation.

Can spiral wound gaskets be reused?

No, spiral wound gaskets are generally designed for single use. During installation and bolting, the metal and filler materials deform plastically to conform perfectly to the flange faces. Removing and reinstalling a used gasket will not recreate the same seal integrity, as the material's recovery properties have been expended. Reuse significantly increases the risk of leakage. Kaxite Sealing always recommends using a new gasket for each flange assembly.

How do I properly install and torque a spiral wound gasket?

Proper installation is critical: 1) Ensure flange faces are clean, undamaged, and aligned. 2) Inspect the gasket for any damage before use. 3) Place the gasket carefully, centered on the flange. For raised face flanges, it should sit within the raised area. 4) Use lubricated bolts of the correct grade. 5) Follow a cross-pattern torque sequence (e.g., star pattern) in multiple steps (typically 30%, 60%, 100% of final torque). Refer to ASME PCC-1 or the equipment manufacturer's guidelines for the specific torque value based on bolt size, grade, and gasket type.

What makes Kaxite Sealing's spiral wound gaskets different from others?

Kaxite Sealing distinguishes itself through precision engineering and quality control. Our gaskets are manufactured on state-of-the-art, CNC-controlled winding machines ensuring perfect density and consistency across every layer. We use 100% traceable, certified raw materials. Every production batch undergoes rigorous dimensional checks and sample testing for density and compression. Furthermore, our technical support team provides application-specific material selection guidance, helping to prevent seal failure and optimize the total cost of ownership for our clients.

Are your gaskets compliant with industry standards for fire safety?

Yes, Kaxite Sealing offers fire-safe spiral wound gaskets designed to pass industry-standard fire tests. Our gaskets with flexible graphite filler and specific metal windings (like 316 SS with tanged outer rings) are commonly used for API 607/API 6FA fire-safe service. For the most demanding applications, such as those requiring API 6FB testing (a more severe jet-fire test), we engineer solutions with specially treated graphite and alloy combinations to maintain a seal during and after exposure to fire.

Material Selection Guide for Common Services

Ordering Information from Kaxite Sealing

To ensure you receive the correct spiral wound gasket, please provide the following information when requesting a quote or placing an order:

• Standard (e.g., ASME B16.20, API 6A, DIN) and Pressure Class/Rating.
• Nominal Pipe Size (NPS or DN) and exact flange dimensions if non-standard.
• Flange facing type (e.g., Raised Face, Ring Type Joint, Flat Face).
• Desired material combination (Metal Winding / Filler / Centering Ring).
• Quantity required.
• Any special certifications needed (e.g., NACE MR0175, NORSOK, PED).