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 5895-01-298-6356
NSN 5935-01-218-5001
NSN 5945-01-068-4471
NSN 5905-01-579-9545
NSN 5945-00-231-1865
NSN 5910-00-496-8200
NSN 5920-01-395-8699
NSN 5960-01-248-4743
NSN 5998-01-436-3601
NSN 6240-01-522-5973
NSN 6610-01-416-0652
NSN 5960-01-170-4057