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 4140-01-553-5767
NSN 5835-01-263-1293
NSN 5960-00-976-4871
NSN 5935-00-104-9404
NSN 5915-00-809-5254
NSN 5965-00-422-5415
NSN 5835-01-384-3206
NSN 6685-01-222-5556
NSN 6645-01-115-2171
NSN 4140-01-312-8632
NSN 5945-01-274-4294
NSN 6130-01-628-7348