Need hoist serial number to i.D. The factory part number
A nonmetallic circular item with an aperature, having a solid round cross-section. They are used primarily for sealing. For items with other than round cross section, see packing,preformed. For noncircular items with a round cross-section, see seal,nonmetallic round section and rubber,round section.
NSN 5996-01-227-2555
NSN 6135-01-567-0739
NSN 6240-01-123-9040
NSN 5895-01-622-0081
NSN 5915-00-341-6505
NSN 7035-01-359-6108
NSN 5925-01-314-7234
NSN 5910-01-474-6341
NSN 6145-01-167-0199
NSN 5999-00-156-0799
NSN 5925-01-360-5605
NSN 5975-00-115-5046