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 5996-01-164-4871
NSN 5990-00-497-9234
NSN 5930-01-374-7311
NSN 5999-01-135-7889
NSN 6135-00-838-7008
NSN 5925-00-251-2036
NSN 6610-01-486-7954
NSN 5835-00-275-0584
NSN 6610-01-229-3679
NSN 6650-00-175-7520
NSN 5990-01-245-7299
NSN 6685-00-885-0707