Special Materials Spiral Wound Gaskets – high-performance sealing solutions engineered from advanced alloys to withstand extreme temperatures, aggressive chemicals, and severe service conditions. Featuring precision-wound construction with fillers including flexible graphite, PTFE, mica, and non-asbestos, these gaskets provide reliable sealing in the most demanding industrial applications. As a leading China special materials spiral wound gasket manufacturer, Kaxite offers a comprehensive range of exotic alloys – Inconel 600/625/800/825, Hastelloy B3/C276, Monel 400, Titanium, and stainless steel grades 304/316/321/347/904/310 – ensuring the right material match for your operating environment. All gaskets are manufactured to ASME B16.20 with full material traceability and certification.
Special materials spiral wound gaskets are precision-engineered sealing components manufactured using a continuous V‑shaped metal strip spirally wound with a flexible filler material. The "special materials" designation refers to the use of exotic alloys and high-performance fillers that extend beyond standard 304/316 stainless steel and graphite combinations.
These advanced gaskets are specifically designed for applications involving high temperatures (up to 1200°C), aggressive chemicals, sour gas (H₂S), seawater, and nuclear environments. Kaxite manufactures special materials spiral wound gaskets in a wide spectrum of alloys including Inconel 600/625/800/825, Hastelloy B3/C276, Monel 400, Titanium, and stainless steel grades 304L/316L/321/347/904L/309/310, with filler options including flexible graphite, PTFE, mica, and non-asbestos. As a premier China special materials SWG supplier, we provide custom sizes, thicknesses, and configurations to meet your exact specifications.
Custom alloy SWG with inner/outer rings
| Winding Material | Filler Options | Max. Temperature | Corrosion Resistance | Typical Applications |
|---|---|---|---|---|
| Inconel 600 / 625 | Graphite / PTFE | 850°C / 260°C | Excellent – acids, chlorides, seawater | Chemical, marine, aerospace |
| Inconel 800 / 825 | Graphite / PTFE | 850°C / 260°C | Excellent – acid, sour gas, sulfur | Oil & gas, petrochemical |
| Hastelloy B3 / C276 | Graphite / PTFE | 850°C / 260°C | Superior – strong acids, chlorides | Chemical processing, waste treatment |
| Monel 400 | Graphite / PTFE | 850°C / 260°C | Excellent – seawater, HF, alkalis | Marine, oil & gas, chemical |
| Titanium | Graphite / PTFE | 850°C / 260°C | Superior – seawater, chlorides | Marine, aerospace, desalination |
| SS321 / 347 | Graphite / PTFE | 850°C / 260°C | Good – high-temp, sensitization resistant | High-temperature, nuclear |
| SS310 / 309 / 904L | Graphite / Mica | 850°C / 1200°C | Good – high-temp, oxidizing | Furnace, heat exchangers, high-temp |
| SS316 / 316L | Graphite / PTFE | 850°C / 260°C | Excellent – general corrosion | General chemical, food, pharma |
Mica filler recommended for extreme high-temperature applications up to 1200°C. PTFE filler suitable for chemical resistance up to 260°C.
Inconel, Hastelloy, Monel, Titanium – we match the alloy to your service conditions.
From cryogenic -200°C to ultra-high 1200°C with mica filler – covering all thermal requirements.
Special alloys resist acids, chlorides, seawater, sour gas, and aggressive chemicals.
Graphite, PTFE, Mica, Non-Asbestos – choose the right filler for your media and temperature.
Any size, shape, thickness, with or without inner/outer rings – built to your specifications.
MTRs, PMI verification, and material certificates provided with every shipment.
Case Example: Offshore Production Platform Corrosion Protection
A North Sea operator was experiencing severe corrosion-related seal failures on seawater injection piping. Standard 316L stainless steel gaskets were failing due to chloride attack. Kaxite supplied special materials spiral wound gaskets with Monel 400 winding and PTFE filler for the 8" 1500# flanges. The Monel alloy provided excellent resistance to seawater corrosion, and after 36 months of service, zero seal failures were reported, extending maintenance intervals and reducing operating costs by an estimated $120,000 annually.
For standard applications, explore our Standard SWG, Exhaust SWG, and SWG for Heat Exchangers.
To source special materials spiral wound gaskets wholesale, please specify:
Need help selecting the right special material? Send your inquiry and our engineering team will recommend the optimal alloy and filler combination for your application.
★ China's Leading Special Materials Spiral Wound Gasket Manufacturer – Request Your Quote
Contact Kaxite for factory‑direct pricing, custom alloy solutions, and expert technical support.
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
