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 5999-00-911-2354
NSN 6150-01-355-4258
NSN 5990-01-054-4255
NSN 5975-00-771-6691
NSN 5996-00-735-3839
NSN 5960-01-178-3845
NSN 6105-01-233-1776
NSN 5965-00-194-9875
NSN 7035-01-627-4757
NSN 5975-01-153-1927
NSN 6610-00-948-7181
NSN 5975-00-770-0151