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 6135-00-862-5154
NSN 5920-01-146-4503
NSN 6645-00-960-6594
NSN 6685-01-323-2136
NSN 6610-00-176-5486
NSN 6145-01-505-0923
NSN 5950-00-826-5827
NSN 5920-00-636-4713
NSN 6145-00-883-2090
NSN 5985-01-568-4909
NSN 5905-00-244-1530
NSN 5990-00-444-9993