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 5835-01-076-4091
NSN 5990-01-376-4376
NSN 5975-01-363-2128
NSN 4140-00-307-2732
NSN 6610-01-391-5092
NSN 5999-01-014-5337
NSN 5960-01-599-9821
NSN 6105-01-527-2390
NSN 6610-01-618-4603
NSN 5945-01-238-7378
NSN 2925-01-434-6945
NSN 5905-01-548-8877