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 6130-01-467-4283
NSN 5855-00-532-0025
NSN 5905-01-645-8680
NSN 6135-00-455-2425
NSN 5910-01-123-5321
NSN 5975-00-954-8549
NSN 5975-01-436-1013
NSN 5990-00-852-2369
NSN 6620-01-162-7632
NSN 2925-00-999-8967
NSN 5925-00-957-1932
NSN 5960-01-343-5912