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 6220-00-527-1177
NSN 5998-01-451-5565
NSN 2925-01-505-1666
NSN 6645-01-277-9337
NSN 6685-01-230-5682
NSN 5975-01-278-9821
NSN 6130-01-599-8514
NSN 5960-00-949-5328
NSN 5930-00-613-2366
NSN 5835-00-315-3797
NSN 5920-01-658-0197
NSN 5910-01-270-2115