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 6610-01-332-5126
NSN 6685-01-607-7935
NSN 5950-01-655-2506
NSN 5996-01-123-9038
NSN 5999-00-264-3445
NSN 4140-01-281-4058
NSN 6220-00-851-2307
NSN 5915-01-442-8785
NSN 7035-00-371-7749
NSN 4140-00-989-3257
NSN 6145-00-423-1563
NSN 6135-00-990-1822