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 5975-01-136-8299
NSN 2925-01-562-8051
NSN 6150-01-219-7891
NSN 5960-00-326-2290
NSN 7035-00-565-9623
NSN 6610-01-395-4918
NSN 4140-01-165-4096
NSN 7035-01-010-8309
NSN 6150-01-009-8730
NSN 6320-01-431-4359
NSN 5950-00-589-4104
NSN 5998-00-253-7665