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 6110-01-299-8870
NSN 5925-01-105-9835
NSN 5950-01-120-1114
NSN 6320-01-113-7647
NSN 5910-01-571-8990
NSN 6620-01-442-8444
NSN 6320-01-631-7828
NSN 5998-01-576-9946
NSN 5895-00-088-6024
NSN 6645-00-739-6718
NSN 6220-00-212-9098
NSN 6320-01-493-4472