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 6135-01-382-1980
NSN 5950-01-451-1994
NSN 6105-01-212-5916
NSN 5835-01-074-1161
NSN 5996-01-155-1450
NSN 5835-01-659-5206
NSN 2925-01-592-5578
NSN 5920-01-406-3950
NSN 6240-01-418-0282
NSN 6105-01-585-3556
NSN 6130-01-421-2213
NSN 5950-00-845-7859