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 5985-00-905-6609
NSN 5965-01-359-8172
NSN 5895-01-391-5682
NSN 6130-00-923-8467
NSN 5925-01-453-2864
NSN 5935-01-096-2008
NSN 5930-01-625-2807
NSN 7035-01-261-9850
NSN 6650-01-529-6721
NSN 6150-00-150-1763
NSN 6145-00-382-6199
NSN 5920-01-274-0837