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 5920-00-764-4061
NSN 5985-01-491-0709
NSN 7035-01-483-7824
NSN 5999-01-027-1810
NSN 5998-01-420-0119
NSN 5915-00-295-7274
NSN 5925-01-506-5306
NSN 6135-00-334-4500
NSN 6105-01-320-1519
NSN 5975-01-027-2157
NSN 6150-00-056-3094
NSN 5920-00-283-7178