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 6320-01-350-5570
NSN 6620-00-972-5899
NSN 6645-01-152-1092
NSN 5855-00-688-9954
NSN 6620-01-465-9885
NSN 5910-01-396-5623
NSN 6645-00-079-4087
NSN 6685-01-025-4966
NSN 6610-01-337-4640
NSN 7035-01-411-6062
NSN 5960-00-843-1868
NSN 5975-00-246-4906