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 6610-01-056-7499
NSN 5985-01-025-0372
NSN 6130-01-085-2929
NSN 5915-00-541-5589
NSN 6130-00-233-8013
NSN 6145-01-297-1806
NSN 6620-00-486-0472
NSN 5990-00-853-1123
NSN 6685-00-959-6767
NSN 6135-00-983-9187
NSN 6645-00-222-0471
NSN 5915-01-222-8698