![](https://sprayersandparts.com/4311-large_default/graco-238049-throat-seal-liquid-4-oz-tsl.jpg)
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This product Graco 238049 Throat Seal Liquid (TSL) comes in a convenient 4 oz bottle.
Routinely adding TSL to your pump’s wet cup helps maintain the pump’s performance, by making sure paint and coatings being sprayed do not dry on your piston rod: which may destroy your packing kit. This could lead to downtime and expensive repairs.
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