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 6110-01-030-6073
NSN 5975-01-479-6550
NSN 2925-01-067-4446
NSN 6150-01-604-3405
NSN 5925-01-594-1873
NSN 6645-01-259-4231
NSN 6610-00-580-9690
NSN 5835-01-250-6027
NSN 5985-01-459-5388
NSN 6130-01-116-2571
NSN 5930-01-230-4902
NSN 2925-01-633-4048