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 5930-01-500-9919
NSN 6650-01-255-4046
NSN 6620-01-127-7390
NSN 6610-01-273-7204
NSN 6645-01-042-0467
NSN 7035-00-490-0485
NSN 6135-01-142-2417
NSN 5985-01-444-2309
NSN 6240-01-529-2261
NSN 5835-01-422-2399
NSN 5920-01-386-5798
NSN 5945-00-103-3978