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 5945-01-077-2806
NSN 5920-01-063-6499
NSN 5835-01-486-0545
NSN 5925-01-010-5349
NSN 5855-01-346-7682
NSN 5920-01-423-8410
NSN 5990-01-348-9843
NSN 6685-00-849-3158
NSN 6610-01-428-3587
NSN 5950-01-046-2653
NSN 5835-00-905-7165
NSN 6105-00-231-2932