Special Materials Spiral Wound Gaskets
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Kaxite have special materials to produce Special Materials Spiral Wound Gaskets which have enough stocks and quick delivery.
Buying special alloy spiral wound gaskets? You need a factory that quotes fast, holds real material certificates, and ships on the date it promised. Kaxite supplies 347, 904L, 321, 309, 310, 317L, Monel 400, Inconel 600/625/800/825, Hastelloy B3/C276, Titanium and 410 winding metals with graphite, PTFE, non-asbestos or mica fillers — from a single gasket to a turnaround package. Send us your flange size, media, pressure and temperature; we will reply with a technical recommendation and quotation within 2 business hours.
What Buyers Get From Kaxite
Direct factory pricing
We wind, weld, size and inspect in our own workshop. No trading company mark-up, no hidden cost between you and the production line.
Certificates with the goods
EN 10204 3.1 material certificates as standard on request. PMI / spectrometer verification on incoming alloy strip before winding.
Honest lead times
Standard materials normally 7–15 working days. Exotic alloys quoted against real mill availability — not an optimistic guess.
Low MOQ, fast response
No rigid minimum for standard sizes. Small shutdown quantities accepted. Quotation and technical reply within 2 business hours.
Drawing & sample production
Non-standard OD, ID, bolt circle, thickness and pass partitions produced to your drawing, sample or flange dimensions.
Export-ready packing
Cartons or wooden cases suitable for sea and air freight, with customer labels and packing lists on request.
Quick Material Selection — What to Use Where
| Your Service Condition | Recommended Winding | Recommended Filler | Why |
|---|---|---|---|
| Hydrofluoric acid, seawater | Monel 400 | PTFE | Resists HF and chloride attack |
| High-temperature steam / hydrocarbon | Inconel 625 or 800H | Graphite | Strength retention at 600–900 °C |
| Wet chlorine, mixed acids | Hastelloy C276 | PTFE | Broad resistance to oxidising media |
| Hydrochloric acid | Hastelloy B3 | PTFE | Best resistance to HCl |
| Sulphuric / phosphoric acid | 904L or Inconel 825 | PTFE or graphite | Proven in acid service |
| Seawater, coastal cooling | Titanium Gr.2 or 904L | PTFE | Chloride stress corrosion resistance |
| High-temperature flue gas | 310 or Inconel 600 | Mica | Oxidation resistance to 850 °C |
| General chemical / water | SS316L | Graphite or non-asbestos | Cost-effective standard duty |
Ordering Information You Should Prepare
To give you a firm quotation and a realistic delivery date the first time, please include the following in your inquiry:
- Gasket standard and size: ASME B16.20 / EN 1514-2 / API 601, DN or NPS, Class or PN.
- Construction: basic, with outer ring (CG), with inner ring (CGI), or with inner & outer ring (CGIR).
- Winding metal and filler: e.g. Inconel 625 + graphite.
- Operating conditions: pressure, temperature, media name and concentration.
- Quantity and required delivery date.
- Documentation: whether EN 10204 3.1 certificates, third-party inspection or test reports are needed.
Not sure which alloy? Send the data sheet or even a photo of the old gasket. Our technical team will recommend the correct winding and filler, and explain why — so you can justify the choice internally.
Key Specifications at a Glance
| Size Range | DN15 – DN3000 (NPS 1/2" – 120"); special sizes and bolt circles to drawing |
|---|---|
| Pressure Class | Class 150 – 2500; PN10 – PN320 |
| Gasket Thickness | 3.2 mm / 4.5 mm standard; 2.0 – 6.0 mm on request |
| Standards | ASME B16.20, EN 1514-2, API 601, DIN 2690, JIS B2404, GB/T 4622, HG/T 20610 |
| Flange Facings | RF, FF, M&F, T&G |
| Ring Material | Carbon steel, SS304, SS316, SS316L — matched to winding alloy if required |
| Marking | Standard, size, class, material code and heat number stamped on outer ring |
| Inspection | 100% dimensional check; PMI on incoming strip; third-party inspection supported |
Typical Applications
Most often specified on heat exchangers, reactor vessels, column flanges, pump and compressor casings, high-pressure steam lines, flare headers, acid transfer lines and cryogenic pipework.
Quality You Can Audit
- Incoming material: alloy strip checked by PMI / spectrometer before it reaches the winding machine.
- In-process: winding density, strip tension and V-shape controlled throughout production.
- Final inspection: 100% check on OD, ID, thickness, ring fit and marking.
- Documentation: EN 10204 3.1 certificates, heat number traceability, and test reports where required.
- Third-party: SGS, BV, TUV or client-nominated inspection can be arranged or hosted.
Purchasing FAQ
What is your minimum order quantity?
No rigid minimum for standard sizes. We supply small quantities for maintenance and shutdown work. For exotic alloys a modest MOQ may apply because the strip is ordered specially — we state this clearly in the quotation.
Can you send samples before we place a bulk order?
For standard materials, yes — sample gaskets can be supplied for fit and dimensional checks. For special alloys, sample cost and lead time are quoted case by case.
What payment terms do you accept?
We normally work with T/T (30% deposit, balance before shipment) and can discuss L/C at sight for larger orders. Terms are confirmed in the quotation.
How are the gaskets packed for export?
Individually protected, then packed in cartons or wooden cases suitable for sea and air freight. Customer labels, packing lists and palletising are available on request.
What if the material certificate is not enough for our end user?
We can arrange third-party inspection and issue additional test reports. Tell us the exact specification your end user requires and we will confirm feasibility before you order.
How do I get a fast quotation?
Send the flange standard and size, construction type, winding metal, filler, media, pressure, temperature and quantity. With these details we can quote accurately within 2 business hours.
Related product ranges you may also need: spiral wound gaskets, ring joint gaskets, expanded graphite gaskets and PTFE gaskets.
Get Your Quotation Within 2 Business Hours
Send your sealing requirement and our technical sales team will respond with a material recommendation, price and delivery date. For the fastest service, include your flange specification, operating pressure, temperature and process media.
- Tel: 0086-574-87527771
- E-mail: kaxite@seal-china.com
- Address: No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang, China
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No. 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
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