Graco TSL Throat Seal Liquid, 8 oz PreviousBlueMax II Airless Whip Hose, 3/16 in x 3 ft NextPump Armor Pump Protectant, 1 qt TSL Throat Seal Liquid, 8 oz TSL Throat Seal Liquid, 8 oz $21.99 Throat Seal Liquid (TSL) prevents paint and coatings from drying onto the displacement rod and packings, extending the life of the pump. Quantity: Add To Cart