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 591-26A Air Valve Assy. $19.95 Add to cart 591-02 Air Cap $29.95 Add to cart 591-43 Trigger $6.50 Add to cart 591-23 Replacement Fluid Needle Spring $5.95 Add to cart