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 5975-00-253-4198
NSN 5945-01-228-1762
NSN 6110-00-215-8585
NSN 5999-01-501-5783
NSN 2925-01-411-8002
NSN 5965-00-436-2226
NSN 5925-01-529-6189
NSN 5910-00-357-2765
NSN 6240-00-840-3647
NSN 7035-00-055-9778
NSN 5950-01-202-8268
NSN 5935-00-622-9874