View cart “591-23 Replacement Fluid Needle Spring” has been added to your cart. 591-42 Retaining Ring$3.50 591-42 Retaining Ring quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Retaining Clip Related products 591-31A Air Inlet Assy. $9.95 Add to cart 591-08 Side Port Control $12.95 Add to cart 591-03 Fluid Nozzle $29.95 Add to cart 591-32 Air Connector $9.95 Add to cart