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 5960-01-197-4461
NSN 5999-01-253-0218
NSN 5998-00-269-3775
NSN 5990-00-060-4811
NSN 7035-01-012-2259
NSN 5960-01-649-1341
NSN 5835-01-042-2247
NSN 6645-01-333-9336
NSN 6220-00-539-0095
NSN 6105-01-120-6014
NSN 6320-01-140-6441
NSN 6645-01-459-7788