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 2925-00-278-9468
NSN 6685-01-012-7556
NSN 5990-00-920-2894
NSN 5905-01-232-9432
NSN 2925-01-281-6403
NSN 5999-00-379-3960
NSN 6645-00-350-8070
NSN 6110-00-698-7526
NSN 6150-01-564-4870
NSN 5960-00-034-7925
NSN 6135-01-448-9474
NSN 6610-00-734-1427