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 5950-01-401-5321
NSN 5960-01-051-1454
NSN 6610-01-441-1581
NSN 5990-01-268-4268
NSN 5960-01-336-4239
NSN 5905-01-150-3627
NSN 5915-01-534-7614
NSN 6130-01-017-3783
NSN 6135-01-223-3869
NSN 6620-01-100-8899
NSN 5925-01-237-9394
NSN 6320-00-831-2227