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 6130-01-139-4491
NSN 5915-01-200-7449
NSN 2925-01-106-3552
NSN 5895-01-106-3809
NSN 5960-01-170-0234
NSN 5996-00-111-1538
NSN 5835-01-468-6170
NSN 5905-01-634-0595
NSN 6145-01-519-2087
NSN 5910-01-504-0496
NSN 7035-01-045-7202
NSN 5935-01-437-8664