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 5930-01-325-9354
NSN 6645-00-074-4580
NSN 6645-01-251-7887
NSN 6240-01-088-0389
NSN 5935-01-096-7626
NSN 5990-01-601-7332
NSN 5935-01-511-6629
NSN 2925-00-526-4541
NSN 5925-01-168-7812
NSN 2925-01-285-0919
NSN 5950-00-394-1546
NSN 6240-00-397-3864