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 5925-01-658-3598
NSN 5985-01-354-6115
NSN 4140-01-622-3121
NSN 5915-01-430-2228
NSN 6145-01-598-5332
NSN 5960-00-237-0125
NSN 6645-00-419-9939
NSN 6610-01-220-8126
NSN 5950-01-227-2466
NSN 5895-00-171-0412
NSN 5835-01-426-6573
NSN 5975-01-197-7673