**Mechanical Seal IN0340.9UQQVGG: Technical Description and Specifications**

The IN0340.9UQQVGG is a precision-engineered mechanical face seal designed for reliable shaft sealing in demanding industrial applications. This model belongs to the comprehensive IN9U/IN8U series, a key part of any professional catalog of mechanical seals (каталог торцевих ущільнень). Its construction is defined by robust materials and exacting dimensions, ensuring compatibility and long-term performance in pumps, mixers, and compressors.

**Core Design and Construction Features**

This seal is classified as a type "с прижимным кольцом" (with a clamping ring), which facilitates secure installation and stable operation. The primary sealing faces utilize silicon carbide (карбид кремния) for both the fixed and moving parts. This material pairing offers exceptional resistance to abrasion, corrosion, and thermal shock, ensuring minimal wear and consistent leak-tight performance over extended service intervals. The metallic structural components are manufactured from AISI304 stainless steel, providing excellent corrosion resistance and mechanical strength. The secondary elastomeric seal is made from NBR (Nitrile Butadiene Rubber), a material chosen for its good compatibility with a wide range of oils, water, and fluids within standard temperature ranges.

**Precise Dimensional Data and Integration**

Accurate dimensions of the mechanical seal (розміри торцевого ущільнення) are critical for proper selection and installation. The IN0340.9UQQVGG is engineered for a nominal shaft diameter (d1) of 34.93 mm. The external diameter of the fixed part (d7) is 50.8 mm, while the outer diameter of the rotating part (d3) measures 51.5 mm. The overall seal length (L3) is 28.6 mm. These precise tolerances guarantee correct fitment within the seal chamber and reliable alignment of the sealing faces, which is fundamental to achieving the intended sealing grade, designated as 9U.

**Application and Operational Benefits**

The combination of silicon carbide faces and a stainless steel metal structure makes this seal suitable for applications involving aggressive media, high peripheral speeds, and environments where solid particles may be present. The 9U seal grade indicates a design optimized for balanced performance in challenging conditions. Engineers and maintenance specialists can confidently specify the IN0340.9UQQVGG from the catalog of mechanical seals for retrofit or original equipment applications where durability and dependable sealing are paramount. Its defined dimensions allow for straightforward verification against existing assembly drawings, streamlining the procurement and maintenance process.

In summary, the Mechanical Seal IN0340.9UQQVGG represents a robust sealing solution where material integrity and precise geometrical parameters are essential for operational reliability and reduced maintenance downtime.

Mechanical Seal IN0340.9UQQVGG: High-Performance Cartridge Seal with Silicon Carbide Faces for 34.93mm Shafts

Mechanical Seal IN0340.9UQQVGG: Silicon Carbide Faces with NBR Elastomer for 34.93mm Shaft

Mechanical Seal IN0340.9UQQVGG: Compact Design for Reliable Shaft Sealing in Demanding Applications