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 6150-00-403-3762
NSN 5990-01-578-5382
NSN 5910-01-007-8236
NSN 5895-01-041-5313
NSN 6320-01-560-7177
NSN 6110-01-465-9422
NSN 5910-00-238-7354
NSN 5930-01-207-9694
NSN 5945-00-063-6265
NSN 5975-01-558-8522
NSN 5965-01-391-1703
NSN 5950-01-106-3961