| Parameter | Specification |
|---|---|
| Product Name | Spiral Wound Metal Gaskets |
| Standard Compliance | ASME B16.20, API 607, NACE MR0175 |
| Pressure Class | Class 150 – Class 2500 |
| Temperature Range | −196°C to +1000°C (depending on materials) |
| Metal Winding Materials | SS304, SS316, SS316L, SS321, SS347, Monel 400, Inconel 600, Hastelloy C‑276 |
| Filler Materials | Flexible Graphite, PTFE, Non-Asbestos, Ceramic, Mica |
| Ring Materials | Carbon Steel, Stainless Steel (304/316), Galvanized Steel |
| Flange Face Types | Raised Face (RF), Flat Face (FF), Ring-Type Joint (RTJ) |
| MOQ (Minimum Order) | 50 pieces (standard sizes) |
| Lead Time | 15–20 business days (standard); express available |
| Certifications | ISO 9001:2025, API 607, ASME B16.20, NACE MR0175 |
| Customization | OEM/ODM, custom sizes, special alloys, non-standard dimensions |
| Traceability | Full batch traceability – MTC per EN 10204 3.1 |
| Target Markets | Americas, Europe, Middle East, Southeast Asia, Africa |
| Key Industries | Oil & Gas, Petrochemical, Power Generation, Chemical Processing, Marine |
Every procurement engineer knows the frustration: a gasket that fails under pressure, a flange connection that weeps after thermal cycling, or a delayed shipment that holds up an entire project.
The root cause? Inconsistent gasket quality. Unclear specifications. Suppliers who don't understand your application.
At Kaxite Sealing, we've been manufacturing spiral wound metal gaskets since 2015. We know that a gasket isn't just a component—it's the difference between a leak‑free operation and a costly shutdown.
Our spiral wound gaskets are engineered to ASME B16.20, fire‑safe certified to API 607, and available in over 15 alloy and filler combinations. Whether you're sealing a heat exchanger in a refinery, a valve in a chemical plant, or a flange in a power station, we deliver gaskets that hold—consistently, reliably, and cost‑effectively.
Feature: V‑shaped metal winding + flexible filler.
Benefit: Eliminates leaks even under thermal cycling and pressure fluctuations.
Feature: Manufactured to ASME B16.20, fire‑tested to API 607.
Benefit: Passes audits — no compliance risks, no project delays.
Feature: 15+ alloy options: SS304, SS316, Inconel, Monel, Hastelloy.
Benefit: Extends gasket life — no premature failures from incompatible materials.
Feature: Rated for ASME Class 150 through Class 2500.
Benefit: Simplifies inventory — standardize on one supplier for all pressure classes.
Feature: MTC per EN 10204 3.1, batch‑level documentation.
Benefit: No liability gaps — you can prove material compliance in any audit.
Feature: Direct manufacturing in Ningbo, China.
Benefit: Cuts procurement costs — get wholesale pricing without the wait.
A spiral wound metal gasket is a semi‑metallic sealing component consisting of a V‑shaped or W‑shaped metal winding strip combined with a soft filler material, wound together in a spiral pattern. This unique construction provides exceptional resilience, allowing the gasket to compress and recover under bolted flange loads while maintaining a tight seal across a wide range of temperatures and pressures.
When bolted between two flanges, the spiral wound gasket compresses. The metal windings provide structural strength and spring‑back action, while the filler material conforms to flange surface imperfections. This dual‑action sealing mechanism makes spiral wound gaskets ideal for applications with:
| Specification | Detail |
|---|---|
| Standards | ASME B16.20, API 607, NACE MR0175 |
| Flange Types | Raised Face (RF), Flat Face (FF), Ring‑Type Joint (RTJ) |
| Pressure Classes | 150, 300, 600, 900, 1500, 2500 |
| Sizes | NPS ½″ through 60″ (custom sizes available) |
| Metal Winding | 304 SS, 316 SS, 316L SS, 321 SS, 347 SS, Monel 400, Inconel 600, Hastelloy C‑276 |
| Filler Options | Flexible Graphite (−196°C to +550°C), PTFE (−196°C to +260°C), Non‑Asbestos, Ceramic, Mica |
| Inner Ring | Optional — prevents winding buckling and protects against flow erosion |
| Outer Ring | Standard — centers the gasket and provides compression limit |
| Industry | Typical Applications |
|---|---|
| Oil & Gas | Pipeline flanges, wellhead equipment, refineries, compressor stations |
| Petrochemical | Heat exchangers, pressure vessels, reactor flanges, distillation columns |
| Power Generation | Steam turbines, boiler flanges, nuclear plant systems, combined cycle plants |
| Chemical Processing | Pump flanges, valve bonnets, mixing vessels, piping systems |
| Marine & Offshore | Shipbuilding flanges, offshore platform connections, ballast systems |
| Pulp & Paper | Digester flanges, steam lines, recovery boiler connections |
| Parameter | Specification |
|---|---|
| Standard | ASME B16.20 (2023) |
| Fire Test Standard | API 607 / ISO 10497 |
| NACE Compliance | NACE MR0175 (sour gas service) |
| Pressure Rating | Class 150 through Class 2500 |
| Temperature Range | −196°C to +1000°C (depending on materials) |
| Size Range | NPS ½″ to 60″ (larger sizes available upon request) |
| Metal Winding Thickness | 0.15 mm – 0.25 mm (standard) |
| Filler Thickness | 0.3 mm – 0.5 mm (standard) |
| Compressibility | 15% – 40% (ASTM F36) |
| Recovery | ≥ 70% (ASTM F36) |
| Leakage Rate | ≤ 0.0137 mg/s‑m (ASME B16.20) |
| Color Coding | Per ASME B16.20 (winding material identification) |
| Marking | Per ASME B16.20 (size, material, standard) |
Custom parameters (non‑standard sizes, special alloys, custom dimensions) — available upon request.
Kaxite Sealing operates its own production facility in Zhenhai District, Ningbo, China. We manufacture every gasket we sell, with full control over quality, materials, and delivery.
Our quality management system is ISO 9001:2025 certified. Our gaskets are API 607 fire‑safe certified and manufactured to ASME B16.20. In‑house QC laboratory with hydrostatic, hardness, and chemical testing.
With over 500 product SKUs and exports to 60+ countries across six continents, we have the production capacity and logistics network to serve projects of any scale.
Every order comes with Material Test Certificates (MTC) per EN 10204 3.1 with batch‑level traceability. Third‑party inspection (SGS, BV, Intertek) coordination available.
We commit to a 2‑hour quote response for standard inquiries and a 15‑20 business day lead time from order confirmation.
Need non‑standard sizes, special alloys, or custom designs? We offer full OEM/ODM services — from material selection to finished gasket, built to your specification.
A: Our spiral wound gaskets are manufactured to ASME B16.20 for dimensions and materials, API 607 for fire‑safe certification, and NACE MR0175 for sour gas service. Other international standards available upon request.
A: We offer 15+ metal winding materials including Stainless Steel 304, 316, 316L, 321, 347, Monel 400, Inconel 600, and Hastelloy C‑276. Filler options include Flexible Graphite, PTFE, Non‑Asbestos, Ceramic, and Mica.
A: Standard MOQ is 50 pieces for standard sizes. For custom sizes or special alloys, MOQ is negotiable. Sample orders are welcome.
A: Standard lead time is 15–20 business days from order confirmation. Express delivery available for urgent orders.
A: Yes. Every order includes Material Test Certificates (MTC) per EN 10204 3.1 with full batch traceability. Third‑party inspection coordination available.
A: Rated for ASME Class 150 through Class 2500. Temperature range depends on materials: Flexible Graphite up to 550°C, PTFE up to 260°C, and cryogenic grades to −196°C.
A: Absolutely. We offer full custom fabrication — any size, any material, any design. Send us your flange drawing or dimensional specifications.
A: Sample orders are available. Contact our sales team with your specifications for a sample quotation. Samples subject to availability and shipping costs.
A: Oil & gas, petrochemical, power generation (thermal, nuclear, combined cycle), chemical processing, marine and offshore, pulp and paper, and pharmaceutical.
A: Yes. We provide full OEM and ODM services — from material selection and design to production and packaging, manufactured to your brand and specifications.
Get a factory‑direct quote within 2 hours — samples available upon request.
📞 +86-574-87527771 | ✉️ [email protected] | 💬 WhatsApp
Address
No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
