591-09 O Ring$4.50 591-09 O Ring quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement “O” Ring Related products 591-23 Replacement Fluid Needle Spring $5.95 Add to cart 591-06 Lock Screw $12.50 Add to cart 591-08 Side Port Control $12.95 Add to cart 591-24A Replacement Needle Bushing Assembly $29.95 Add to cart