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 6645-00-764-0412
NSN 5835-01-589-4735
NSN 6650-00-187-5388
NSN 6105-00-186-0161
NSN 6650-00-356-8405
NSN 5990-01-177-2838
NSN 5950-01-143-1816
NSN 5910-01-413-2897
NSN 5985-01-534-2864
NSN 6645-01-546-8226
NSN 5905-01-232-6445
NSN 2925-00-614-1758