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 5855-01-020-7982
NSN 6650-00-242-7961
NSN 6110-01-220-5888
NSN 5910-00-171-3414
NSN 5835-01-432-1277
NSN 6320-01-056-1164
NSN 5925-00-071-7689
NSN 4140-00-189-0235
NSN 5965-00-864-8046
NSN 5895-00-387-4901
NSN 5965-01-535-0718
NSN 5855-01-519-7929