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 5975-01-543-9049
NSN 5910-01-169-8162
NSN 5925-00-466-7308
NSN 5910-01-378-9957
NSN 5999-00-018-6718
NSN 2925-00-909-2596
NSN 4140-01-111-1117
NSN 5990-00-201-1162
NSN 6135-00-635-9187
NSN 5835-01-068-4214
NSN 6240-01-266-3655
NSN 5985-00-064-7103