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 5930-01-054-2903
NSN 5930-00-138-7976
NSN 6110-00-663-4054
NSN 6685-01-655-6321
NSN 6610-00-943-3136
NSN 5950-01-425-0633
NSN 5945-00-728-8054
NSN 7035-00-887-4674
NSN 6320-01-497-3116
NSN 5996-01-385-0884
NSN 6685-01-425-2768
NSN 2925-01-582-2869