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 5990-01-378-7349
NSN 4140-01-361-2292
NSN 5905-01-031-3302
NSN 7035-01-633-9537
NSN 5905-01-481-4953
NSN 6650-01-337-9970
NSN 6685-01-590-6620
NSN 6610-00-308-9034
NSN 5895-00-952-3490
NSN 6240-00-443-4944
NSN 6220-01-519-9305
NSN 5905-01-444-2037