A circular shaped item with an aperture manufactured to predetermined dimensions and designed for use as a seal in stuffing boxes, packing nuts, and the like. It may be (1) any nonmetallic molded or formed ring (except solid (without joint) rings having a square or rectangular cross section); or (2) any shredded metal or metal foil type metallic or semimetallic rings. Excludes felt items but includes multimaterial items in which one of the materials is felt. For solid (without joints) nonmetallic items with a square or rectangular cross section, see washer (as modified) and gasket. For rubber items specifically designed for weather-proofing doors, windows, chests, and the like see seal, nonmetallic angle; seal, nonmetallic channel; and seal, nonmetallic, special shaped section. For circular (with aperature) nonmetallic items with a solid round cross-section see o-ring. Excludes cup, compression; gasket; washer (as modified); and felt, mechanical, preformed.
Classification: Gaskets,washers & other seals
NSN 5996-01-076-2938
NSN 6645-01-473-9179
NSN 5985-00-785-5473
NSN 5975-00-690-9061
NSN 6645-01-094-8917
NSN 5930-00-602-2164
NSN 6145-00-905-5590
NSN 6130-00-466-8939
NSN 5999-01-038-6798
NSN 5975-00-925-1197
NSN 5935-01-178-0972
NSN 5985-00-960-0141