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 5985-01-465-3669
NSN 5935-01-296-9228
NSN 5945-01-440-6414
NSN 5855-01-416-1527
NSN 6620-00-482-1073
NSN 6645-01-252-8870
NSN 5930-01-125-0067
NSN 5935-00-103-7988
NSN 6620-01-586-3040
NSN 5910-00-663-5865
NSN 5905-00-395-4168
NSN 5920-00-717-6839