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 6685-01-483-9173
NSN 5855-01-409-1792
NSN 6220-01-656-3925
NSN 6685-01-612-5046
NSN 6645-01-519-2220
NSN 5905-01-490-7808
NSN 6130-01-122-0308
NSN 5999-01-625-7364
NSN 6110-01-191-8781
NSN 5960-01-192-7710
NSN 5930-01-254-3819
NSN 5985-00-369-5649