Mechanical seal IN0250.8BQQVGG

The mechanical seal IN0250.8BQQVGG is a precision-engineered component designed for reliable shaft sealing in demanding industrial pump applications. This model belongs to the comprehensive CATALOG OF MECHANICAL SEALS within the IN9B/IN8B series, characterized by a balanced design and robust construction. Its primary function is to prevent fluid leakage along rotating shafts, ensuring operational safety, environmental protection, and equipment longevity.

Key construction features define the performance envelope of this seal. The rotating and stationary faces are manufactured from silicon carbide (карбид кремния), a material selected for its exceptional hardness, superior wear resistance, and excellent chemical inertness. This pairing ensures minimal friction and long-term sealing integrity even in abrasive or corrosive media. The metal components are constructed from AISI304 stainless steel, providing reliable structural strength and good corrosion resistance. The secondary sealing element is made from NBR (Nitrile Butadiene Rubber), a versatile elastomer offering effective sealing and compatibility with a wide range of oils, water, and certain chemicals.

Critical **розміри торцевого ущільнення** are precisely defined for correct installation and function. The seal is engineered for a shaft diameter (d1) of 25.4 mm. The external diameter of the fixed part (d7) is 44.45 mm, while the outer diameter of the moving part (d3) measures 43.5 mm. The overall seal length (L3) is 35 mm. These dimensions must be carefully verified against the equipment specifications to ensure a proper fit. The IN0250.8BQQVGG is classified as a seal grade 8B and is of the type "с прижимным кольцом" (with a gland plate), which facilitates secure mounting and alignment within the seal chamber.

This mechanical seal is suitable for a broad spectrum of applications, including centrifugal pumps, mixers, and compressors used in chemical processing, water treatment, and general industrial services. Its design prioritizes durability and consistent performance under varying pressure and temperature conditions. When selecting a replacement or specifying a new seal, consulting the detailed **каталог торцевих ущільнень** for the IN8B series is essential to confirm compatibility and identify all necessary auxiliary components. The IN0250.8BQQVGG represents a standardized, high-quality solution for effective rotational shaft sealing.