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 2925-00-782-1498
NSN 5950-01-200-4851
NSN 5930-01-297-1522
NSN 6145-00-834-9393
NSN 5985-01-547-6572
NSN 5925-01-323-6491
NSN 6145-00-069-8964
NSN 5895-01-390-2671
NSN 5998-01-430-1888
NSN 5920-01-570-4436
NSN 5975-00-081-2171
NSN 5996-01-519-6269