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 5855-01-658-4510
NSN 5910-00-241-8498
NSN 5990-01-293-4817
NSN 5998-01-042-7378
NSN 7035-00-349-8571
NSN 5930-01-407-8586
NSN 5999-01-475-2220
NSN 4140-01-268-5098
NSN 5950-01-278-8205
NSN 5985-00-117-7246
NSN 5945-01-478-5866
NSN 5925-00-691-2434