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 5975-01-537-8121
NSN 5999-01-234-3983
NSN 5920-00-736-7882
NSN 6110-01-556-2750
NSN 5965-00-518-0958
NSN 5910-01-361-1141
NSN 5985-01-660-6276
NSN 6645-00-922-8312
NSN 6685-01-176-6869
NSN 6645-00-947-0625
NSN 5915-00-553-8755
NSN 6240-00-122-6697