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 5990-00-768-9341
NSN 6145-01-364-6011
NSN 6620-00-450-9995
NSN 5965-00-137-9291
NSN 5835-01-602-0311
NSN 5855-01-499-8692
NSN 5950-00-364-0764
NSN 5985-01-373-4466
NSN 6645-01-302-6243
NSN 5925-01-063-7107
NSN 6145-01-340-0298
NSN 5999-01-323-5807