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 5990-01-076-8901
NSN 5895-01-277-7860
NSN 6610-01-209-8991
NSN 5985-01-600-0306
NSN 6645-01-179-0243
NSN 2925-01-063-7876
NSN 4140-00-322-9987
NSN 5905-01-633-8408
NSN 6105-00-957-9252
NSN 6135-01-529-3789
NSN 6110-01-445-2840
NSN 5999-00-208-3797