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 5835-00-451-2982
NSN 5905-01-512-5289
NSN 5925-00-009-9818
NSN 6105-01-648-5790
NSN 6105-01-523-4777
NSN 6320-01-496-4605
NSN 5975-00-952-0021
NSN 6320-01-191-6717
NSN 5835-01-018-6294
NSN 5985-00-909-1643
NSN 5855-01-180-5369
NSN 5930-01-051-3984