“591-09 O Ring” has been added to your cart. View cart 591-41 Packing Screw$2.50 591-41 Packing Screw quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Packing Screw Related products 591-14A Air Bushing Assy. $36.95 Add to cart 591-02 Air Cap $29.95 Add to cart 591-42 Retaining Ring $3.50 Add to cart 591-44 Stud $3.50 Add to cart