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 5925-01-495-1862
NSN 5935-01-410-7742
NSN 6105-01-569-6689
NSN 6610-01-141-7014
NSN 6105-01-608-3974
NSN 5915-00-304-8195
NSN 6645-01-004-0803
NSN 5905-01-477-9506
NSN 5855-01-634-0259
NSN 5855-01-466-5353
NSN 5935-01-258-1296
NSN 6240-01-250-3574