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 5975-01-016-8263
NSN 6220-01-226-6982
NSN 5945-01-110-8269
NSN 5855-01-278-4868
NSN 5999-01-122-0579
NSN 6645-01-172-6838
NSN 5925-00-163-3953
NSN 2925-01-350-8372
NSN 6240-01-442-3501
NSN 5855-01-384-4914
NSN 6110-01-261-3086
NSN 5835-01-645-2892