LEADING METAL GASKETS MANUFACTURER, EXPORTER & SUPPLIER
Manufacturer, Exporter & Supplier of Premium Industrial Gaskets
Sunflex Metalloy manufactures a comprehensive range of industrial metal gaskets across material families — Cupro-Nickel, Stainless Steel, Copper, Brass, Inconel, Monel and Hastelloy. Every gasket we produce is precision-fabricated to meet your exact dimensional specifications, flange standard, and application requirement. Whether you need standard off-the-shelf dimensions or fully custom gaskets for OEM or legacy equipment, our manufacturing capability covers the complete spectrum of industrial sealing needs.
Sunflex Cupro-Nickel gaskets are manufactured from premium Cu-Ni alloy in two internationally recognized grades — 90/10 (UNS C70600) and 70/30 (UNS C71500) — offering unmatched corrosion resistance in seawater, chloride-rich media, and aggressive process fluids. Engineered for the most demanding marine, offshore, and petrochemical applications, our Cu-Ni gaskets deliver consistent, leak-free sealing performance across a broad range of temperatures and pressures.
The unique metallurgical properties of Cupro-Nickel — including its natural resistance to biofouling, stress corrosion cracking, and erosion-corrosion — make it the material of choice for seawater piping systems, offshore platforms, naval vessels, desalination plants, and power plant condensers. Available across all standard gasket forms and all major flange standards.
Sunflex Stainless Steel gaskets are precision-manufactured from a range of austenitic, ferritic, and duplex stainless steel grades — delivering exceptional strength, temperature resistance, and chemical compatibility across the widest range of industrial applications. From pharmaceutical clean rooms to high-pressure steam turbines, our SS gaskets are engineered to maintain sealing integrity under the most demanding service conditions.
Available in grades including SS 304, SS 304L, SS 316, SS 316L, SS 321, SS 347, and duplex/super duplex grades (SS 2205, SS 2507), our stainless steel gaskets offer the versatility to handle everything from mild process fluids to highly corrosive acids, high-temperature steam, and cryogenic media.
Sunflex Copper gaskets are manufactured from commercially pure copper (C10100, C10200, C11000) — a soft, highly malleable metal that conforms readily to flange surface irregularities to create reliable, leak-tight seals even under moderate bolt loads. The exceptional thermal conductivity, electrical conductivity, and corrosion resistance of copper make these gaskets the preferred sealing solution for applications where heat transfer, electrical continuity, or a soft, ductile seal is essential.
Copper gaskets are widely specified in heat exchangers, automotive and marine engine cylinder heads, electrical systems, pressure vessels, and HVAC equipment. They are particularly effective in applications where the mating flanges may not be perfectly flat, as copper's natural ductility allows it to cold-flow under clamping load.
Sunflex Brass gaskets offer a reliable, cost-effective metal sealing solution for a broad range of general industrial, plumbing, water treatment, and HVAC applications. Manufactured from high-quality brass alloy — primarily CuZn30 (70/30 brass) and CuZn37 — our brass gaskets combine good corrosion resistance in water, mild acids, and atmospheric environments with excellent machinability and ductility.
Brass gaskets are an economical alternative to stainless steel or copper in low-to-moderate pressure applications where aggressive corrosion or extreme temperatures are not present. Their ease of fabrication allows us to produce brass gaskets in virtually any shape, size, or profile — from standard pipe flange ring gaskets to complex custom profiles for OEM equipment.
Sunflex Inconel gaskets are precision-manufactured from nickel-chromium superalloys — engineered specifically for applications where conventional stainless steel and carbon steel gaskets cannot survive. Inconel alloys are renowned for their extraordinary resistance to oxidation, carburization, and thermal fatigue at temperatures that would cause most metals to lose mechanical strength and fail.
We manufacture Inconel gaskets across the most widely specified grades — Inconel 600, 625, 718, and 825 — in all standard gasket forms. These gaskets are trusted by engineers in gas turbine manufacturing, aerospace ground support, nuclear power, petrochemical high-temperature reactors, and furnace applications where no other material delivers comparable service life and reliability.
Sunflex Monel gaskets are manufactured from nickel-copper alloys — a family of materials that offers an exceptional combination of strength, toughness, and corrosion resistance that surpasses both pure nickel and copper in a wide range of aggressive chemical and marine environments. Monel alloys are unique in their ability to resist hydrofluoric acid — one of the most corrosive industrial chemicals.
Monel 400, the most widely used grade, offers excellent resistance to seawater, steam, and a broad range of acids and alkalis across a wide temperature range without risk of stress corrosion cracking — a key advantage over stainless steel in many chemical environments.
Sunflex Hastelloy gaskets represent the highest tier of industrial corrosion resistance in our product range. Hastelloy — a family of nickel-molybdenum and nickel-molybdenum-chromium superalloys — was developed specifically for environments so chemically aggressive that virtually no other engineering material can provide adequate service life. If your process involves concentrated sulfuric acid, wet chlorine gas, or highly oxidizing halide media, Hastelloy is the answer.
Hastelloy C-276, the most widely used grade, resists attack from hydrochloric acid, sulfuric acid, nitric acid, phosphoric acid, chlorine, and hypochlorite — making it the go-to material for the chemical process industry's most challenging sealing applications.
