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 6645-00-925-3857
NSN 5855-01-510-9416
NSN 6145-01-184-6027
NSN 6145-01-407-0289
NSN 5960-01-544-1273
NSN 5985-01-487-7417
NSN 6110-01-563-1337
NSN 5835-01-036-4951
NSN 5990-01-218-1821
NSN 6220-01-007-1912
NSN 5999-00-548-2060
NSN 5855-01-074-3335