Please fill out the form below for Seal 057 Id Dbl Delta Channel and get a quote for part number 1391-502 by Woodward Governor Company, please include required quantity along with expected turn around time. Our knowledgeable account manager will reply you shortly. Also check for the related parts for part number 1391-502. ASAP Aerospace distributes nose to tail NSN components, sub-assemblies, and assemblies for the aerospace and aviation industry.