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 5985-01-605-0230
NSN 5975-01-411-7724
NSN 5965-01-191-0735
NSN 6645-01-111-3758
NSN 5945-01-384-3735
NSN 6685-00-596-8765
NSN 5985-00-643-3875
NSN 6620-01-465-4227
NSN 5905-01-464-4820
NSN 2925-00-989-0523
NSN 6650-01-366-7811
NSN 5985-01-054-3994