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 5990-01-498-0641
NSN 5835-00-853-7785
NSN 6610-00-880-1242
NSN 2925-01-350-8372
NSN 5915-00-005-2616
NSN 6645-01-017-8576
NSN 5950-01-394-1994
NSN 2925-00-073-9375
NSN 5895-01-022-5266
NSN 6110-01-331-8300
NSN 6150-01-607-0369
NSN 7035-00-553-6951