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 6150-01-519-9309
NSN 6650-01-199-4968
NSN 5910-01-442-3647
NSN 5990-00-552-1611
NSN 5835-00-624-1548
NSN 6685-01-226-4068
NSN 5835-01-553-6772
NSN 6145-00-758-9884
NSN 5925-01-204-8583
NSN 5910-00-779-0228
NSN 6645-00-759-3962
NSN 5930-01-206-7661