M kit has 4 different parts; gasket and seal are nbr rubber
NSN 6135-00-985-7846
NSN 5965-01-580-0572
NSN 5975-01-035-2017
NSN 5999-01-106-3041
NSN 6105-01-467-2990
NSN 5855-00-610-4052
NSN 6135-00-948-7061
NSN 6110-01-585-8824
NSN 5910-01-193-8951
NSN 6620-01-423-0833
NSN 5985-01-611-0113
NSN 5910-01-421-4153
Last Updated: 05/31/2024