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 5920-01-096-8449
NSN 6620-00-719-7021
NSN 2925-00-010-9609
NSN 5835-01-064-2165
NSN 4140-01-572-3807
NSN 5920-01-457-6741
NSN 5855-00-079-2370
NSN 6240-00-539-9770
NSN 5905-01-170-4831
NSN 6105-01-395-4596
NSN 2925-01-273-4898
NSN 5920-01-552-5887