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 5975-00-943-1959
NSN 5920-00-493-6627
NSN 7035-01-462-1957
NSN 6145-00-910-8847
NSN 5835-01-314-2781
NSN 5985-01-206-3594
NSN 5835-01-328-6626
NSN 5895-00-764-5384
NSN 5930-01-332-3098
NSN 6220-00-085-5206
NSN 5930-01-255-1993
NSN 5965-01-088-5414