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 4140-01-155-0508
NSN 6610-01-622-4326
NSN 6145-01-075-8265
NSN 6645-00-100-7218
NSN 5895-00-224-6955
NSN 5996-00-961-3250
NSN 7035-00-849-5526
NSN 5855-01-160-3802
NSN 5965-00-964-1756
NSN 6150-00-821-5561
NSN 6645-01-073-1176
NSN 2925-00-085-7332