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 4140-00-596-4726
NSN 5925-01-158-5008
NSN 6220-01-261-2488
NSN 5925-00-689-4646
NSN 5905-01-414-8205
NSN 5910-01-140-6400
NSN 6320-00-546-9249
NSN 5945-01-528-2444
NSN 7035-01-364-8454
NSN 4140-01-618-0274
NSN 2925-01-633-4048
NSN 5985-01-028-3089