Part Number 999-4-00518-011 Seal Bonded Steel 1 2 1 4 Bspf in stock with ready to ship. Get an instant quote for Eaton Aviation Corporation part number 999-4-00518-011 by filling form below with your desired order quantity, targeted price and the expected order-fulfilment date. Get instant quote for 999-4-00518-011. Our dedicated account manager will get back to you within 15 minutes.