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 5960-01-570-8605
NSN 5925-01-457-9113
NSN 4140-00-087-0100
NSN 6685-00-547-6218
NSN 5915-01-306-0288
NSN 6150-01-434-7013
NSN 5998-01-448-9923
NSN 6610-01-018-9122
NSN 6685-01-494-1994
NSN 5835-01-173-1578
NSN 5990-00-295-7522
NSN 5915-00-828-6644