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 5835-01-529-3050
NSN 5975-01-467-0147
NSN 5835-00-473-1010
NSN 5990-01-252-8175
NSN 6220-01-501-0846
NSN 5998-01-623-1649
NSN 6620-01-335-9197
NSN 7035-01-227-2546
NSN 6220-00-949-0024
NSN 5950-01-283-7061
NSN 6645-01-479-5364
NSN 6240-01-085-6576