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 5835-01-378-6804
NSN 5975-01-303-7906
NSN 5990-01-561-0737
NSN 5930-00-234-1390
NSN 6110-00-688-5043
NSN 2925-01-384-4139
NSN 2925-01-350-8372
NSN 6105-00-912-3088
NSN 5975-01-545-3415
NSN 6110-01-590-2515
NSN 5960-01-408-8263
NSN 6105-00-233-7312