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Graco 103648 Packing O-Ring

The Graco 103648 Packing O-Ring is a genuine OEM Viton® seal designed for high-pressure Graco fluid filters and surge tanks, ensuring a leak-free performance and chemical resistance.

  • Part Number: 103648
  • Material: Viton® (fluoroelastomer)
  • Application: Fluid filter / surge tank seal
  • Feature: High solvent and temperature resistance
  • Compatibility: Models 214724, 214624, 214726

$15.44
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Overview & Compatibility — Graco 103648 Packing O-Ring

Compatible Machines

  • Graco Surge Tank / Fluid Filter Model 214724 (Series E)
  • Graco Surge Tank / Fluid Filter Model 214624 (Series C)
  • Graco Surge Tank / Fluid Filter Model 214726 (Series E)
  • Also fits other Graco pump & spray assemblies using the same Viton® O-ring seal design — verify your parts list shows item #103648.

What This Part Is

The Graco 103648 is a genuine OEM Packing O-Ring made from Viton® (fluoroelastomer). It provides a durable, chemical-resistant seal in high-pressure fluid filter / surge tank sub-assemblies used on various Graco systems.

Technical Specifications

Part Number 103648
Description Packing, O-Ring (Viton®)
Material Viton® (fluoroelastomer) — excellent solvent & temperature resistance
Typical Location Seal in fluid filter / surge tank assemblies on Graco equipment
Function Maintains a high-pressure fluid seal to prevent leaks and sustain spray performance

Key Benefits

  • OEM fit: Designed to match the original Graco sealing groove and dimensions.
  • Chemical resistance: Viton® handles aggressive coatings & solvents better than common elastomers.
  • Pressure integrity: Helps maintain consistent spray pressure and reduce downtime from leaks.

How to Verify Fit

  1. Locate your sprayer’s parts breakdown or service manual.
  2. Find the fluid filter / surge tank assembly diagram.
  3. Confirm the listed seal is 103648. If yes, this is the correct replacement.

Frequently Asked Questions

It fits models whose parts list calls out 103648. Many Graco units share filter/surge tank sub-assemblies; always check your manual’s item number to confirm.

Viton® is a fluoroelastomer with superior solvent and temperature resistance compared to standard elastomers (e.g., NBR/EPDM), making it ideal for demanding coating applications.

Visible flattening/cracking, fluid leakage at the filter/surge tank housing, loss of pressure, or scheduled preventive maintenance intervals.

Use of non-OEM parts is possible but must match the material, diameter, and cross-section. For reliability, an OEM Graco 103648 is recommended.

Clean the groove, lightly lubricate with a seal-compatible lubricant, avoid twisting during install, and torque housings per your manual to ensure a reliable seal.

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