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 5999-01-044-1469
NSN 5975-00-558-2495
NSN 6610-01-631-1184
NSN 5999-00-201-0818
NSN 6110-01-364-0322
NSN 6105-01-461-3287
NSN 5910-01-328-1685
NSN 5945-01-602-7068
NSN 6110-00-530-3779
NSN 5855-01-407-5761
NSN 5985-01-264-7490
NSN 6685-01-475-8252