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 5915-01-299-4394
NSN 4140-00-733-7936
NSN 5990-01-370-7912
NSN 6110-00-643-4832
NSN 5910-00-975-1089
NSN 5950-01-323-4654
NSN 5925-01-345-3777
NSN 2925-00-295-1994
NSN 7035-01-579-4029
NSN 6130-00-016-7368
NSN 2925-01-180-9264
NSN 5996-00-443-1663