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 5925-01-395-7600
NSN 6240-01-195-8696
NSN 5945-01-181-2117
NSN 6110-01-252-6438
NSN 5999-01-562-9836
NSN 6105-01-026-0165
NSN 5855-01-288-2271
NSN 6645-00-295-8535
NSN 7035-01-602-9350
NSN 5950-01-473-1184
NSN 5960-01-014-3876
NSN 5975-01-407-8331