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 6135-01-500-0572
NSN 5985-01-494-4048
NSN 6610-01-050-0955
NSN 7035-01-483-7824
NSN 6650-01-034-2209
NSN 6145-01-446-5421
NSN 6320-00-643-0958
NSN 5855-00-337-3679
NSN 5915-00-203-2380
NSN 6105-01-338-7761
NSN 5920-00-243-9506
NSN 6650-01-144-3577