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 5905-01-581-1806
NSN 5996-00-778-8663
NSN 2925-01-629-9416
NSN 5910-00-223-5454
NSN 5910-01-282-3927
NSN 5935-01-012-3082
NSN 5996-00-156-5967
NSN 5905-01-017-4777
NSN 5965-01-185-2026
NSN 5999-00-726-9363
NSN 5905-01-050-8992
NSN 6150-01-177-1732