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Graco 803918 Packing O-Ring Viton

The Graco 803918 Packing O-Ring Viton is a durable sealing component designed to prevent leaks in Graco fluid handling and diaphragm pump systems. Made from chemical-resistant Viton (FKM), it ensures reliable sealing in demanding industrial environments.

  • Part Number: 803918
  • Product Type: Packing O-Ring Seal
  • Material: Viton (FKM) for chemical and heat resistance
  • Application: Internal sealing in Graco pump assemblies
  • Use: Prevents air and fluid leakage during operation
  • Common Equipment: Graco Husky diaphragm pumps and fluid sections

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Compatible Machines

The Graco 803918 Packing O-Ring Viton is a sealing component used in several Graco fluid handling and diaphragm pump systems. It helps maintain proper sealing inside pump assemblies and repair kits.

  • Graco Husky 205 Air Operated Diaphragm Pump
  • Graco Husky 307 Air Operated Diaphragm Pump
  • Graco Husky 515 Air Operated Diaphragm Pump
  • Graco Husky 716 Air Operated Diaphragm Pump
  • Graco Husky 1050 Air Operated Diaphragm Pump
  • Graco Husky 1590 Air Operated Diaphragm Pump
  • Graco Husky 2150 Air Operated Diaphragm Pump
  • Various Graco pump seal and repair kits
  • Selected Graco fluid section assemblies

Product Overview

The Graco 803918 Packing O-Ring Viton is a precision sealing ring designed to prevent leaks within pump assemblies and fluid handling systems. Manufactured from Viton (FKM) material, this O-ring provides excellent resistance to chemicals, solvents, and elevated temperatures commonly encountered in industrial coating and fluid transfer applications.

This sealing component is commonly used during pump maintenance or when replacing worn seals in Graco diaphragm pumps and fluid sections. Its durable elastomer construction ensures reliable sealing performance and extended service life in demanding environments.

Key Features

Feature Description
Part Number 803918
Product Type Packing O-Ring Seal
Material Viton (FKM) high-performance elastomer
Application Internal sealing for Graco pumps and fluid handling equipment
Chemical Resistance Excellent resistance to solvents, coatings, and industrial fluids
Temperature Resistance Suitable for high-temperature operating environments

Applications

The Graco 803918 Packing O-Ring Viton is typically used in the maintenance and repair of fluid transfer and coating equipment where reliable sealing is required.

  • Industrial coating and paint systems
  • Chemical and solvent transfer pumps
  • Air-operated diaphragm pump assemblies
  • Fluid section repair and seal replacement
  • Preventing leakage in pressurized pump systems

Frequently Asked Questions

The O-ring acts as a sealing component that prevents fluid or air leaks within pump assemblies and fluid sections of compatible Graco equipment.

Viton (FKM) offers excellent resistance to chemicals, solvents, oils, and high temperatures, making it ideal for demanding industrial pump applications.

The O-ring should be replaced during routine pump maintenance, when leakage occurs, or whenever seals are changed as part of a repair kit installation.

Yes, this O-ring is used in various Graco diaphragm pumps and fluid section assemblies. Compatibility should always be confirmed with the equipment parts diagram or service manual.

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