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 5915-01-218-6100
NSN 5965-01-003-2641
NSN 6150-01-246-4419
NSN 5985-01-295-2893
NSN 7035-01-627-0015
NSN 5990-00-170-4239
NSN 6240-01-301-8668
NSN 6320-01-194-1253
NSN 2925-01-458-5808
NSN 5925-01-624-0595
NSN 6685-01-461-8826
NSN 6130-01-269-7676