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 5855-00-688-9954
NSN 5960-01-514-5433
NSN 5910-01-173-8966
NSN 6130-01-607-6305
NSN 6610-01-085-8873
NSN 5990-01-656-7047
NSN 5855-01-461-2741
NSN 6145-01-154-7183
NSN 5985-00-318-2539
NSN 5895-01-027-9155
NSN 5945-00-934-3123
NSN 6150-01-231-2747