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 5998-01-024-9042
NSN 2925-01-283-6740
NSN 4140-01-376-7965
NSN 5975-01-109-3003
NSN 6610-00-467-7846
NSN 5985-01-452-9399
NSN 6620-01-590-6283
NSN 6105-01-220-5963
NSN 6685-01-352-5665
NSN 6135-01-495-0933
NSN 5975-00-706-2164
NSN 6105-00-488-5425