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 5950-01-331-8202
NSN 5905-01-094-9059
NSN 5985-00-679-2624
NSN 5990-01-364-0813
NSN 6150-00-516-8445
NSN 5895-01-483-1554
NSN 6685-01-107-3962
NSN 5905-01-512-1898
NSN 5915-01-455-0002
NSN 5920-01-084-7975
NSN 5925-00-964-4989
NSN 6220-00-965-7959