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 5905-00-786-4262
NSN 5905-01-513-6913
NSN 2925-01-576-6206
NSN 5920-01-442-1735
NSN 6645-00-300-0401
NSN 5920-01-395-3748
NSN 5965-01-088-5414
NSN 5925-00-973-1160
NSN 5855-01-156-0417
NSN 5835-00-494-1701
NSN 6240-01-388-4099
NSN 6650-01-211-9642