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 2925-01-633-4048
NSN 5945-01-003-9426
NSN 6620-01-618-2962
NSN 6320-01-631-7828
NSN 5945-01-021-5699
NSN 6105-01-153-2302
NSN 5910-00-497-5601
NSN 6685-01-081-7522
NSN 5965-00-977-5658
NSN 5920-01-183-3125
NSN 6130-00-860-5170
NSN 6145-00-060-2380