Kaxite Sealing manufactures spiral wound gaskets with graphite filler from V-shape SS316L or SS304 stainless steel strip tape wound together with a flexible graphite tape filler. Combining a rigid metal winding with a soft graphite core gives the gasket both structural support and an excellent seal — even on imperfect flange faces.
Graphite tape is chosen as the filler because it works from −250 °C to approximately 650 °C, holds compressibility and recovery stable across that full range, and contains no binders — so it will not age or embrittle in storage or service. It also resists chemical media and radiation, and shows low permeability to gases and liquids, making it the standard filler choice for petroleum, chemical, gas, industrial and marine applications.
Standard sizes are produced to ASME B16.20 and matched to ASME B16.5, ASME B16.47 A/B, BS EN 1092 and DIN flanges. Custom combinations of metal winding and filler, OEM private-label packaging and flexible MOQ are available for B2B buyers. Send your flange standard, nominal pipe size, pressure rating and winding material and we will quote.
A spiral wound gasket with graphite filler is made of a V-shape SS316L or SS304 stainless steel strip tape wound together with a flexible graphite tape filler. Because the gasket combines metal strips with a softer filler material, it offers both good structural support and an excellent seal — even when the flange faces are not perfectly flat.
Spiral wound gaskets are available in a variety of metals and materials, allowing for a wide range of structural densities to be produced according to the demands of each application. The metal winding carries the bolt load and provides spring-back; the graphite filler sits between winding layers and forms the primary seal against the flange faces.
Four standard filler grades cover the full range of industrial sealing duties. Each grade is identified by the strip colour code on the outer guide ring, so maintenance teams can verify the correct filler grade during installation without measuring or testing the material.
The graphite filler card is highlighted because it is the standard grade for petroleum, chemical and gas service — the temperature range covers most process piping, heat exchanger and valve bonnet applications without needing a more expensive filler grade.
Four properties make graphite tape the default filler choice for the majority of industrial spiral wound gasket applications. Each one solves a specific failure mode that other filler materials are prone to.
Works from −250 °C to approximately 650 °C depending on setting up and performing conditions. Covers cryogenic, ambient and high-temperature process lines with a single filler grade.
Holds compressibility and recovery stable over a wide temperature range, so the sealing load does not drift after thousands of thermal cycles.
Contains no binders, so it does not age or embrittle in storage or in service. Gaskets pulled from warehouse stock perform the same as freshly made ones.
High effectiveness against chemical media and radiation. Low permeability to gases and liquids. Handles water, steam, oil, solvents and other common industrial chemicals.
Spiral wound gaskets with graphite filler are particularly suitable for complex equipment in the petroleum, chemical and gas, industrial and marine industries. The combination of high-temperature resistance, high-pressure capability and chemical inertness covers the most demanding flanged joints in process plants.
High-pressure process piping in refineries, chemical plants and gas transmission networks.
Shell-and-tube and air-cooled exchanger flanges on steam, hydrocarbon and chemical service.
Gate, globe, check and control valve bonnet flanges where the seal is opened for maintenance.
Boiler access ports where high temperature and pressure cycling are normal operating conditions.
Heat exchanger tube cap flanges on high-temperature process streams.
Flanged joints on marine engine exhaust, steam systems and offshore process equipment.
To return a firm unit price, lead time and available samples, send the following four items with your enquiry. If you already have a flange drawing or a sample of the existing gasket, attach that instead — we will match it directly.
If you are unsure which winding or filler grade is right for your service, send the medium, temperature range and pressure and our engineers will recommend the combination. Custom combinations of metal winding and non-metal filler are produced to your drawing — including nearly any metal with graphite, PTFE, vermiculite, ceramic or mica graphite filler.
Send your flange standard, nominal pipe size, pressure rating, winding material and quantity. Our sales engineers reply with a quotation, available samples and the packing options for your market.
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
