**Mechanical Seal IN0280.804.QQVGG: High-Performance Tandem Seal for Demanding Applications**

The IN0280.804.QQVGG is a precision-engineered double (tandem) mechanical seal designed for reliable operation in challenging industrial environments. As part of the comprehensive **catalog of mechanical seals** within the IN804 series, this model is constructed for applications requiring enhanced sealing security, particularly where leakage prevention is critical. Its tandem configuration provides a dual-barrier system, where the primary seal handles the process fluid and the secondary seal acts as a backup, often with a barrier fluid in between, offering an extra layer of containment and safety.

**Technical Specifications and Construction**
This seal is defined by its robust material composition and precise **dimensions of the mechanical seal**. The stationary and rotating faces are manufactured from silicon carbide (карбид кремния), a material renowned for its exceptional hardness, excellent wear resistance, and superior chemical inertness. This ensures long-term performance and stability when handling abrasive media or corrosive fluids. The metallic structural components are made from AISI 304 stainless steel, providing good general corrosion resistance and structural integrity. The secondary sealing element utilizes VITON elastomer, known for its high-temperature stability and broad chemical compatibility, particularly with hydrocarbons and many aggressive fluids.

Key dimensional parameters are integral to proper selection and installation. The seal is designed for a shaft diameter (d1) of 28 mm. Both the stationary part external diameter (d7) and the rotating part outer diameter (d3) are precisely machined to 43 mm. The overall seal length (L3) is 39 mm. These standardized **dimensions of the mechanical seal** ensure compatibility with a wide range of pump and rotary equipment housings designed for the 804 seal grade.

**Primary Features and Application Benefits**
The tandem type design of the IN0280.804.QQVGG makes it an ideal solution for applications involving volatile, hazardous, expensive, or environmentally sensitive fluids. It is commonly deployed in chemical processing, petrochemical industries, refineries, and pharmaceutical applications where emission control is mandated. The use of silicon carbide faces minimizes friction and heat generation, contributing to extended service life and reduced maintenance downtime. The combination of VITON and AISI 304 further enhances its suitability for a diverse operational spectrum, from moderate chemical duties to services requiring elevated temperature resistance.

When consulting the **catalog of mechanical seals**, the IN0280.804.QQVGG stands out for its balanced design, which offers reliable sealing performance under variable pressure and temperature conditions. Its construction ensures predictable behavior and ease of installation for maintenance personnel. This mechanical seal represents a critical component for systems where operational integrity, safety, and environmental compliance are paramount, providing a dependable sealing solution based on proven materials and precise engineering.

Double Tandem Mechanical Seal IN0280.804.QQVGG for 28mm Shaft with Silicon Carbide Faces and VITON Elastomer

Double Tandem Mechanical Seal IN0280.804.QQVGG: Silicon Carbide Faces for 28mm Shaft

Mechanical Seal IN0280.804.QQVGG: Tandem Design for Enhanced Leakage Protection in Demanding Applications