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 6135-01-633-8502
NSN 5920-01-217-8379
NSN 5855-01-289-4253
NSN 5910-00-571-6854
NSN 6105-01-141-3614
NSN 5950-01-204-2228
NSN 5990-00-140-4559
NSN 6685-00-542-0924
NSN 5910-00-764-8575
NSN 6240-01-344-9975
NSN 7035-00-225-6499
NSN 5990-01-548-5979