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 6145-01-279-1264
NSN 6645-01-023-8724
NSN 6145-00-517-6666
NSN 6240-01-150-2712
NSN 6685-01-315-1860
NSN 5930-01-182-4796
NSN 5925-01-363-4520
NSN 5975-01-344-4950
NSN 5985-00-197-1197
NSN 5945-01-486-5541
NSN 6620-00-469-2502
NSN 5960-01-617-6345