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 5985-00-372-5946
NSN 5855-01-600-0486
NSN 5920-01-032-4756
NSN 5950-00-460-2140
NSN 4140-01-627-6868
NSN 6645-00-450-2209
NSN 5910-01-388-2895
NSN 6130-01-269-4498
NSN 6135-01-305-6958
NSN 6130-00-393-0645
NSN 6110-00-246-3941
NSN 6645-00-117-9839