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 6135-00-752-1589
NSN 6685-01-445-6201
NSN 5990-00-889-9634
NSN 5835-01-115-1543
NSN 6105-00-295-2558
NSN 5999-01-111-0001
NSN 5999-01-384-7560
NSN 5920-00-889-7826
NSN 5975-00-701-8061
NSN 4140-01-536-2221
NSN 5950-01-371-3688
NSN 7035-01-061-6424