Stainless Steel 904L Blind Flanges

Stainless Steel 904L Blind Flanges are solid, disk-shaped mechanical fasteners used to seal off the end of a piping system, valve, or pressure vessel opening. Unlike other flange types (like Weld Neck or Slip-On), the Blind Flange has no bore and its primary function is to block the flow of fluid or gas. They are typically bolted together with a gasket to create a leak-proof seal, allowing for easy access to the pipeline when removal is necessary. The material, SS 904L, is a high-alloy super austenitic stainless steel known for its exceptional resistance to corrosion, particularly in severe acidic and chloride-rich environments. The high Nickel, Chromium, Molybdenum, and Copper content ensures performance where standard stainless steels would fail due to pitting or stress corrosion cracking. The main application of SS 904L Blind Flanges includes isolating sections of pipe for maintenance, providing a future connection point (spade/spacer), or closing off the end of a process line in chemical plants, oil refineries, and pollution control systems. Zeron Fasteners manufactures and supplies these flanges to the highest quality standards.

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