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 5835-01-416-6455
NSN 5910-01-487-3735
NSN 6150-01-187-4255
NSN 5990-01-426-2037
NSN 6620-00-829-1860
NSN 6320-00-331-7138
NSN 6150-00-596-9882
NSN 5920-01-438-5751
NSN 5925-01-365-5442
NSN 5910-00-222-6268
NSN 7035-00-392-5417
NSN 6240-01-604-1293