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 5965-00-925-1725
NSN 5975-01-415-8040
NSN 6685-01-413-0683
NSN 4140-00-660-8699
NSN 5996-00-732-9873
NSN 7035-01-278-1379
NSN 5960-01-437-5318
NSN 5990-01-559-0578
NSN 6105-00-275-0826
NSN 6650-00-996-9132
NSN 5835-00-816-0394
NSN 7035-01-027-3510