“591-42 Retaining Ring” has been added to your cart. View cart 591-31A Air Inlet Assy.$9.95 591-31A Air Inlet Assy. quantity Add to cart Category: TB591 Adhesive Spray Gun Description Description Replacement Air Inlet Assembly Related products 591-01-1 Air Cap Clip $2.95 Add to cart 591-09 O Ring $4.50 Add to cart 591-42 Retaining Ring $3.50 Add to cart 591-40 Packing $3.50 Add to cart