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 6620-01-288-2627
NSN 6220-01-153-1937
NSN 6645-01-263-5481
NSN 5930-00-162-8870
NSN 7035-00-295-0451
NSN 5915-00-269-9252
NSN 6105-01-374-0557
NSN 6135-01-310-9866
NSN 5895-01-528-7564
NSN 7035-01-202-8172
NSN 7035-00-392-5417
NSN 5835-01-589-4735