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 5835-01-104-5707
NSN 5930-01-039-1776
NSN 6105-01-312-7430
NSN 5835-01-469-8968
NSN 6105-01-527-0270
NSN 5965-01-326-9860
NSN 6110-01-399-1903
NSN 5925-01-099-4702
NSN 5905-00-202-5772
NSN 6620-00-740-3699
NSN 2925-01-651-4870
NSN 5945-00-107-2953