

OEM packing nut that secures packing seals in Graco fluid pumps to help prevent leaks and maintain pressure.
*Verify compatibility with your model parts list.
The Graco 181871 NUT, PACKING secures packing seals in pump assemblies, maintaining seal compression and preventing fluid leaks around reciprocating shafts. :contentReference[oaicite:14]{index=14}
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