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 5835-00-870-7034
NSN 5855-00-089-3974
NSN 5998-01-055-6043
NSN 5985-01-440-1557
NSN 6685-00-403-1226
NSN 5910-01-495-1575
NSN 5998-01-286-0739
NSN 6145-00-635-9957
NSN 5999-01-269-8304
NSN 5965-01-024-7960
NSN 6240-01-398-0646
NSN 5935-01-510-3204