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 6240-01-534-2987
NSN 5925-00-929-7829
NSN 6610-01-476-7412
NSN 5855-01-154-3871
NSN 6610-01-277-6333
NSN 5925-00-929-7274
NSN 4140-01-624-2199
NSN 6145-01-574-8511
NSN 6130-01-653-3961
NSN 6650-01-280-3547
NSN 6150-01-523-0077
NSN 6620-01-535-6925