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 6150-00-078-3489
NSN 5905-00-010-0641
NSN 5895-00-518-1593
NSN 5960-01-567-1096
NSN 5910-01-417-1463
NSN 5965-00-042-5433
NSN 5950-01-302-0725
NSN 6685-01-377-0519
NSN 5930-01-054-8013
NSN 6650-00-451-1084
NSN 6685-01-147-4532
NSN 5920-00-688-4086