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 6150-01-180-9882
NSN 6145-01-644-8788
NSN 5935-01-131-6668
NSN 5930-00-494-9915
NSN 6130-01-454-8899
NSN 6150-01-561-7782
NSN 6685-01-545-7910
NSN 5895-01-138-6127
NSN 5998-01-458-9088
NSN 5965-00-164-8092
NSN 5985-01-551-3301
NSN 5945-01-204-8594