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 5975-01-129-9601
NSN 5950-01-121-8073
NSN 6685-01-601-3211
NSN 5915-01-441-5444
NSN 5950-01-361-9148
NSN 5965-01-362-3264
NSN 2925-00-497-7808
NSN 5930-00-399-2618
NSN 5965-00-497-1130
NSN 5999-01-184-1142
NSN 5965-01-488-4332
NSN 6610-00-185-9434