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 5975-00-189-0093
NSN 6645-00-958-5299
NSN 5985-00-137-8747
NSN 5950-01-089-7030
NSN 5998-01-200-7715
NSN 5925-01-228-4534
NSN 5910-01-110-4379
NSN 5950-01-272-0354
NSN 6610-01-086-5455
NSN 6105-01-016-9189
NSN 5915-01-271-7740
NSN 6145-01-338-1135