LEADING METAL GASKETS MANUFACTURER, EXPORTER & SUPPLIER
Manufacturer, Exporter & Supplier of Copper-Nickel, Stainless Steel & Alloy Industrial Gaskets
Flexible Soft-Fill Sealing with Metal Protection for Non-Standard & Aged Flanges
Metal Jacketed gaskets consist of a soft, compressible filler material — typically ceramic fibre, flexible graphite, non-asbestos compressed fibre sheet, or PTFE — completely enclosed within a formed metal jacket. The outer metal jacket provides mechanical protection to the filler, resists the corrosive process fluid and environment, and gives the gasket its structural rigidity and dimensional stability.
Metal Jacketed gaskets are particularly well-suited for heat exchanger channel covers, pressure vessel manway covers, and large-diameter flanges where surface finish may not be ideal — and are available with a jacket in any of our seven premium alloys.
Available Materials: Copper-Nickel · Stainless Steel · Copper · Brass · Inconel · Monel · Hastelloy
Sunflex Metalloy manufactures Metal Jacketed Gaskets in seven premium alloys, so you can match the gasket material precisely to your process fluid, temperature, and corrosion requirements.
Copper-Nickel (Cu-Ni 90/10 / 70/30) is one of the most requested materials for metal jacketed gaskets, offering outstanding seawater & biofouling resistance, with a maximum operating temperature of 400°C and a typical pressure rating of Class 150–2500 — making it the benchmark choice for marine, offshore & desalination duty.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Stainless Steel (SS 304 / 316 / 316L) is one of the most requested materials for metal jacketed gaskets, offering excellent general & chemical corrosion resistance, with a maximum operating temperature of 600°C and a typical pressure rating of Class 150–2500 — making it the most versatile, cost-effective all-round choice.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Copper (C11000 / ETP) is one of the most requested materials for metal jacketed gaskets, offering good ductility & soft-sealing conformability, with a maximum operating temperature of 250°C and a typical pressure rating of Class 150–1500 — making it low-to-medium pressure sealing with excellent conductivity.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Brass (CZ108 / C36000) is one of the most requested materials for metal jacketed gaskets, offering moderate corrosion resistance, good machinability, with a maximum operating temperature of 200°C and a typical pressure rating of Class 150–900 — making it economical general-duty & instrumentation sealing.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Inconel (600 / 625 / 718) is one of the most requested materials for metal jacketed gaskets, offering exceptional oxidation & high-temperature resistance, with a maximum operating temperature of 1000°C+ and a typical pressure rating of Class 150–2500 — making it extreme heat, cryogenic & superalloy-grade service.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Monel (400 / K-500) is one of the most requested materials for metal jacketed gaskets, offering outstanding resistance to acids & seawater, with a maximum operating temperature of 480°C and a typical pressure rating of Class 150–2500 — making it hydrofluoric acid & chemical processing duty.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Hastelloy (C276 / C22) is one of the most requested materials for metal jacketed gaskets, offering extreme resistance to highly corrosive/oxidizing media, with a maximum operating temperature of 1000°C+ and a typical pressure rating of Class 150–2500 — making it the premium choice for the harshest chemical environments.
Best For: Heat exchanger channel covers · Pressure vessel manway sealing · Large-diameter process flanges · Aged or worn flange surfaces · Marine vessel equipment
Not sure which material is right for your metal jacketed gaskets application? Use this comparison to match your operating conditions to the right alloy.
| Material | Pressure Class | Max Temp | Flange Face Type | Reusable | Corrosion Resistance |
|---|---|---|---|---|---|
| Copper-Nickel | Class 150–2500 | Up to 400°C | FF, RF, MF, T&G | No | Outstanding seawater & biofouling resistance |
| Stainless Steel | Class 150–2500 | Up to 600°C | FF, RF, MF, T&G | No | Excellent general & chemical corrosion resistance |
| Copper | Class 150–1500 | Up to 250°C | FF, RF, MF, T&G | No | Good ductility & soft-sealing conformability |
| Brass | Class 150–900 | Up to 200°C | FF, RF, MF, T&G | No | Moderate corrosion resistance, good machinability |
| Inconel | Class 150–2500 | Up to 1000°C+ | FF, RF, MF, T&G | No | Exceptional oxidation & high-temperature resistance |
| Monel | Class 150–2500 | Up to 480°C | FF, RF, MF, T&G | No | Outstanding resistance to acids & seawater |
| Hastelloy | Class 150–2500 | Up to 1000°C+ | FF, RF, MF, T&G | No | Extreme resistance to highly corrosive/oxidizing media |
All Metal Jacketed Gaskets manufactured by Sunflex Metalloy conform to internationally recognized material, dimensional, and quality standards. We supply to EPC contractors, project engineers, and maintenance teams across India and internationally — with complete documentation packages.
