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 6645-01-268-0544
NSN 6105-00-593-3817
NSN 5998-00-969-8811
NSN 6105-01-627-6255
NSN 5930-01-537-8175
NSN 5985-00-541-7714
NSN 5965-01-218-5003
NSN 5990-01-617-5156
NSN 6220-01-095-0117
NSN 6135-01-319-0623
NSN 5965-01-364-3002
NSN 5990-00-825-2882