LEADING METAL GASKETS MANUFACTURER, EXPORTER & SUPPLIER
Manufacturer, Exporter & Supplier of Copper-Nickel, Stainless Steel & Alloy Industrial Gaskets
Precision Spherical-Profile Sealing for Ultra-High-Pressure Pipelines & Process Systems
Lens Ring gaskets are precision-machined solid metal sealing rings with a distinctive convex spherical (lens-shaped) cross-section profile. The lens ring gasket seals through line contact — the convex spherical profile contacts the matching concave conical seat in the flange face at a single circular line of contact, concentrating sealing stress to a very high level even at relatively low bolt loads.
Lens Ring gaskets are widely used in high-pressure gas and oil pipeline systems, compressor stations, and instrumentation connections where operating pressures may reach several hundred bar — and are available machined from any of our seven premium alloys.
Available Materials: Copper-Nickel · Stainless Steel · Copper · Brass · Inconel · Monel · Hastelloy
Sunflex Metalloy manufactures Lens Ring 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 lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Stainless Steel (SS 304 / 316 / 316L) is one of the most requested materials for lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Copper (C11000 / ETP) is one of the most requested materials for lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Brass (CZ108 / C36000) is one of the most requested materials for lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Inconel (600 / 625 / 718) is one of the most requested materials for lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Monel (400 / K-500) is one of the most requested materials for lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Hastelloy (C276 / C22) is one of the most requested materials for lens ring 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: Ultra-high-pressure gas and oil pipelines · Compressor station flanges · High-pressure instrumentation connections · Subsea and wellhead applications
Not sure which material is right for your lens ring 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 | Concave conical seat | No | Outstanding seawater & biofouling resistance |
| Stainless Steel | Class 150–2500 | Up to 600°C | Concave conical seat | No | Excellent general & chemical corrosion resistance |
| Copper | Class 150–1500 | Up to 250°C | Concave conical seat | No | Good ductility & soft-sealing conformability |
| Brass | Class 150–900 | Up to 200°C | Concave conical seat | No | Moderate corrosion resistance, good machinability |
| Inconel | Class 150–2500 | Up to 1000°C+ | Concave conical seat | No | Exceptional oxidation & high-temperature resistance |
| Monel | Class 150–2500 | Up to 480°C | Concave conical seat | No | Outstanding resistance to acids & seawater |
| Hastelloy | Class 150–2500 | Up to 1000°C+ | Concave conical seat | No | Extreme resistance to highly corrosive/oxidizing media |
All Lens Ring 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.
