Spiral Wound Gasket for Heat Exchangers – precision-engineered sealing solutions specifically designed for TEMA-style heat exchanger flanges. Featuring a standard spiral wound sealing element combined with solid metal inner rings, outer wound noses, and custom-configured pass partition bars, these gaskets ensure reliable sealing under fluctuating temperature and pressure conditions. As a leading China heat exchanger gasket manufacturer, Kaxite produces custom-designed gaskets to match individual heat exchanger designs – with pass bars available in solid metal or double jacketed construction, in a wide range of alloys and filler materials. All gaskets are manufactured to ASME B16.20 and TEMA standards with full material traceability.
A spiral wound gasket for heat exchangers is a specially designed sealing component used in TEMA-style shell-and-tube heat exchanger flanges. Unlike standard spiral wound gaskets, heat exchanger gaskets feature pass partition bars (ribs) that separate the fluid passages, preventing cross-contamination between different channels. The gasket typically consists of a spiral wound sealing element, a solid metal inner ring (to protect the winding and act as a compression stop), and an outer wound nose to ensure correct positioning in the flange recess.
These gaskets are custom-built to suit individual heat exchanger designs – no standard sizes exist. Kaxite manufactures each gasket to customer specifications, including the number, position, and configuration of pass bars. As a trusted China heat exchanger gasket supplier, we work from your engineering drawings to produce gaskets that match your TEMA flange design, with pass bars available in either solid metal or double jacketed construction to meet your service requirements.
Custom heat exchanger SWG with pass bars
Custom-configured ribs separate fluid passes – available in solid metal or double jacketed construction.
Solid metal inner ring protects the sealing element and acts as a compression stop – prevents over-compression.
Outer wound nose ensures correct sealing element positioning in the TEMA flange recess.
Spiral wound design provides resilience against temperature and pressure cycling common in heat exchangers.
Every gasket is designed and manufactured to match your specific heat exchanger drawing and TEMA flange design.
Stainless steels, Inconel, Hastelloy, Monel – plus graphite, PTFE, mica, and non‑asbestos fillers.
V‑shaped metal winding with flexible filler – provides spring‑like resilience under pressure and temperature changes.
Protects the sealing element, prevents blow‑out, and acts as a compression stop – essential for heat exchanger service.
Ensures correct gasket location in the flange recess – prevents misalignment during installation.
Custom‑configured to separate fluid passes – available in solid metal or double jacketed construction.
| Component | Material Options | Temperature Range | Applications |
|---|---|---|---|
| Winding Metal | 304 / 316 / 321 / 347 / Inconel 600/625 / Hastelloy C276 / Monel 400 | Up to 850°C (graphite) / 1200°C (mica) | General, corrosive, high‑temp |
| Filler Material | Flexible Graphite / PTFE / Mica / Non‑Asbestos | 850°C / 260°C / 1200°C / 450°C | Steam, chemicals, high‑temp |
| Inner Ring | Carbon Steel / 304 SS / 316 SS / Inconel | Same as winding | Compression stop, protection |
| Pass Bars | Solid Metal or Double Jacketed – same alloys as winding | Same as winding | Pass separation, fluid channels |
| Outer Wound Nose | Same as winding | Same as winding | Flange recess positioning |
Case Example: Chemical Plant Heat Exchanger Upgrade
A large chemical plant in Louisiana was experiencing chronic leakage on their TEMA-style heat exchangers. Standard gaskets were failing due to thermal cycling and the complex pass bar geometry. Kaxite supplied custom heat exchanger spiral wound gaskets with 316 stainless winding, graphite filler, solid inner rings, and double jacketed pass bars – designed to match the exchanger's 42" diameter flange with six pass channels. After installation, the gaskets performed without leakage through multiple temperature cycles, reducing maintenance downtime by 50% and extending the exchanger service life by over two years.
For other spiral wound gasket types, explore our Standard SWG, Exhaust SWG, Special Materials SWG, and Non-Rounded SWG.
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Need a custom heat exchanger gasket? Send your inquiry with your drawing, and our engineering team will provide a quotation within 24 hours.
★ China's Leading Heat Exchanger Spiral Wound Gasket Manufacturer – Request Your Quote
Contact Kaxite for factory‑direct pricing, custom designs, and expert technical support.
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No 432 Zhenhai Middle Road, Luotuo Street, Zhenhai District, Ningbo City, Zhejiang China
