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 5965-01-124-1817
NSN 5975-01-354-9430
NSN 5975-01-461-1776
NSN 6150-01-354-1411
NSN 6220-01-602-9025
NSN 5930-01-451-2598
NSN 6150-01-419-4350
NSN 5905-00-446-8974
NSN 7035-01-443-3052
NSN 6240-00-227-0135
NSN 5895-01-493-4131
NSN 5905-00-441-8544