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 5935-01-246-3638
NSN 5925-00-186-0765
NSN 5920-00-681-1172
NSN 6130-00-554-7852
NSN 6240-00-966-1390
NSN 5935-01-655-0899
NSN 5935-01-350-2189
NSN 5905-01-054-0336
NSN 5960-00-633-7670
NSN 5996-01-661-1442
NSN 5950-01-107-7845
NSN 5925-01-421-2632