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 6240-01-230-4938
NSN 2925-01-357-2512
NSN 5920-01-168-2044
NSN 5925-01-159-4122
NSN 6650-00-527-7451
NSN 5915-01-142-2018
NSN 6105-01-502-4238
NSN 6650-01-652-9980
NSN 6320-01-493-4472
NSN 5930-01-337-3048
NSN 5990-01-546-1649
NSN 5925-01-025-7007