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 5945-01-438-7443
NSN 5975-00-933-7678
NSN 6110-01-335-0580
NSN 5930-00-862-2650
NSN 6650-01-569-0004
NSN 6650-00-167-9955
NSN 5925-00-217-6381
NSN 4140-00-635-6257
NSN 6320-01-054-3046
NSN 6685-01-129-9569
NSN 6145-01-362-8572
NSN 6135-01-483-5269