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 2925-01-251-5725
NSN 5935-00-462-9186
NSN 5930-01-021-7577
NSN 6685-00-419-4263
NSN 5910-01-581-3527
NSN 6110-00-985-2342
NSN 6220-00-942-2678
NSN 5935-01-329-8292
NSN 6650-01-412-1040
NSN 6645-01-390-3442
NSN 5999-01-176-6109
NSN 6135-01-095-2556