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 6620-01-369-3589
NSN 5999-01-376-7648
NSN 5895-01-534-7907
NSN 5930-00-471-6354
NSN 6645-01-463-3441
NSN 5915-00-296-5031
NSN 5935-01-129-9186
NSN 6320-01-399-6177
NSN 5905-01-300-7697
NSN 2925-01-083-3986
NSN 6240-00-997-4559
NSN 6320-01-220-2264