View cart “591-42 Retaining Ring” has been added to your cart. 591-02 Air Cap$29.95 591-02 Air Cap quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Air Cap Related products 591-31A Air Inlet Assy. $9.95 Add to cart 591-06 Lock Screw $12.50 Add to cart 591-41 Packing Screw $2.50 Add to cart 591-08 Side Port Control $12.95 Add to cart