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 5930-00-868-4490
NSN 4140-00-296-9695
NSN 4140-01-576-4014
NSN 5835-01-122-0068
NSN 6150-01-547-7152
NSN 6135-01-183-8993
NSN 5965-00-055-8013
NSN 6620-00-189-0967
NSN 5855-01-020-7982
NSN 6105-01-512-7888
NSN 5985-01-218-5276
NSN 5950-01-415-5752