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 5996-01-371-4182
NSN 5895-01-189-2240
NSN 5996-01-221-3407
NSN 6105-00-004-1276
NSN 5905-01-415-1529
NSN 6110-00-172-1809
NSN 6645-01-214-6309
NSN 5990-00-339-2084
NSN 5910-00-688-5900
NSN 6105-01-563-7594
NSN 5999-00-050-3186
NSN 5925-01-600-6303