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 5920-01-253-2173
NSN 6220-01-076-5057
NSN 6320-01-032-9703
NSN 5935-01-365-4922
NSN 5920-01-020-7659
NSN 5895-01-493-6972
NSN 6610-01-584-9816
NSN 5835-01-538-1804
NSN 6610-01-020-3764
NSN 6110-01-225-5953
NSN 5950-01-094-4560
NSN 5996-01-204-5640