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 5985-01-027-8271
NSN 6145-01-586-3861
NSN 7035-01-619-8541
NSN 6105-01-420-5624
NSN 6150-01-609-3854
NSN 6645-01-447-3143
NSN 6645-01-399-3487
NSN 5915-00-186-0463
NSN 5910-01-295-9054
NSN 5835-01-141-8823
NSN 5975-01-226-1097
NSN 6135-00-347-0595