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 5975-00-724-3147
NSN 5935-01-026-0965
NSN 6110-01-174-9569
NSN 6110-01-498-1354
NSN 5835-00-348-2013
NSN 5910-01-349-3058
NSN 5910-01-190-7670
NSN 5945-01-301-2873
NSN 5925-00-945-3604
NSN 5990-01-386-5561
NSN 6685-01-423-4613
NSN 6240-01-133-4551