View cart “591-09 O Ring” has been added to your cart. 591-08 Side Port Control$12.95 591-08 Side Port Control quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Side Port Control Related products 591-41 Packing Screw $2.50 Add to cart 591-42 Retaining Ring $3.50 Add to cart 591-20 Needle $19.95 Add to cart 591-01-1 Air Cap Clip $2.95 Add to cart