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 5905-00-299-0899
NSN 7035-00-574-4223
NSN 4140-01-434-9115
NSN 5999-01-367-4432
NSN 6130-01-168-8507
NSN 6110-00-671-6738
NSN 7035-00-286-6221
NSN 5835-01-090-0784
NSN 5998-00-294-2438
NSN 5975-01-088-8753
NSN 5920-00-265-6222
NSN 6130-01-106-3649