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 5920-01-659-4475
NSN 6650-00-879-5834
NSN 5905-01-073-5733
NSN 5985-00-661-2262
NSN 6145-00-299-6417
NSN 6610-00-131-8817
NSN 5990-01-254-3197
NSN 6145-00-136-9132
NSN 6110-01-543-8239
NSN 5930-01-213-6519
NSN 6105-00-407-1232
NSN 6150-01-017-8603