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Graco 164656 Vee Leather Pump Packing Seal

Graco 164656 — Vee Leather Pump Packing Seal for displacement-pump stacks. Use where the pump parts diagram specifically calls out 164656 to maintain prime and pressure.

  • Part #: 164656 (also written 164-656)
  • Material: Leather V-packing for rod/piston sealing
  • Location: Lower pump packing stack (wet-cup area)
  • Fits: Select Graco sprayers; verify your pump diagram lists 164656
  • Replace if: Fluid weeping at wet cup, loss of pressure, frequent re-priming

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Overview & Compatibility Guidance for Graco 164656 V-Packing

Compatible Machines (verify by pump section)

This Vee Leather Pump Packing Seal (p/n 164656) is used in the displacement-pump section on select professional Graco airless units that explicitly list 164656 in their parts diagram. Always confirm by checking your machine’s pump/exploded view.

  • Ultra / Ultra Max contractor pumps – older displacement-pump versions that specify 164656 in the rod/piston packing stack (check your manual)
  • Ultra Max II 695 / 795 / 1095 / 1595 – select earlier pump sections calling out 164656 (verify by model year & pump serial)
  • GMAX / GMAX II gasoline series – units whose pump parts list shows 164656 leather V-packing (confirm on the pump’s parts page)
  • Other legacy Graco displacement-pump sprayers where the packing set lists 164656 (material: leather)

What this part is

The Graco 164656 is a V-packing made of leather. It installs in the lower pump’s packing stack (rod/piston area) to seal under reciprocating motion, helping prevent fluid bypass and maintain prime/pressure.

Key points

  • Material: Leather V-packing for classic/legacy Graco pump stacks
  • Function: Seals the displacement rod/piston to minimize leakage and maintain performance
  • Placement: Part of the lower packing set—orientation matters during installation
  • When to replace: Loss of pressure, fluid weeping at the wet cup, or frequent re-priming needs

Specs & Cross-Reference

Attribute Detail
Part Number 164656 (also styled as 164-656)
Description Vee Leather Pump Packing Seal (V-packing; leather)
Fits Displacement-pump stacks on select Graco professional sprayers (must be listed as 164656 in the pump parts diagram)
Typical Location Lower pump assembly (rod/piston seal stack)
Replaces/Alt Use only where the manual calls out 164656; not a universal substitute for PTFE/UHMW packings

Frequently Asked Questions

Open your sprayer’s manual or pump exploded view and look for the packing stack callouts. If the list specifically includes 164656, it’s the correct leather V-packing for your pump revision. If it’s a different part number (e.g., PTFE-based), use that exact part instead.

Always follow the pump’s parts diagram. Some legacy pumps specify leather V-packings like 164656 for certain materials and operating conditions. Newer pumps may specify PTFE or mixed stacks. Matching the manual preserves pressure, priming, and service life.

Keep the orientation of each V-packing correct, lubricate as the manual specifies, and torque hardware to spec. If your pump uses a mixed stack (leather + synthetic), maintain the exact order. After assembly, prime and check for leaks at the wet cup.

Possibly. If your pump’s parts list calls out 164656, it’s compatible. If not, do not substitute. Share your model & pump section with support to confirm the correct kit.

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