View cart “591-42 Retaining Ring” has been added to your cart. 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 591-08 Side Port Control $12.95 Add to cart 591-06 Lock Screw $12.50 Add to cart 591-01-1 Air Cap Clip $2.95 Add to cart 591-32 Air Connector $9.95 Add to cart