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 6110-01-045-9141
NSN 6150-01-424-4066
NSN 5910-00-252-4853
NSN 5930-01-382-9798
NSN 5855-01-480-1396
NSN 4140-01-368-7097
NSN 6620-01-012-2852
NSN 5925-01-479-9392
NSN 6135-01-520-4670
NSN 6685-01-263-9972
NSN 6130-01-108-7326
NSN 5990-01-157-0441