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 6650-01-501-5661
NSN 6135-00-451-0709
NSN 6105-00-101-8860
NSN 6620-01-515-6269
NSN 6135-01-113-1507
NSN 5895-01-370-3351
NSN 6650-00-138-8605
NSN 6610-01-525-4389
NSN 5930-01-111-7689
NSN 6685-01-089-9606
NSN 6105-00-248-5772
NSN 5999-01-317-3990