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 5925-00-490-0229
NSN 4140-00-648-3303
NSN 5895-01-479-5031
NSN 6320-01-530-4870
NSN 6130-01-322-0592
NSN 5965-01-361-7540
NSN 5945-00-771-8115
NSN 6220-01-239-9079
NSN 5990-01-487-0871
NSN 5985-01-645-8840
NSN 6645-01-493-2620
NSN 6620-01-358-0205