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 5998-00-166-2289
NSN 5905-00-734-2221
NSN 6220-00-925-2233
NSN 5945-00-531-8361
NSN 5960-01-076-4708
NSN 5910-01-045-5990
NSN 6240-01-607-6252
NSN 2925-00-233-5644
NSN 5930-01-421-2371
NSN 5965-01-186-2051
NSN 5990-01-516-9665
NSN 5925-01-254-2578