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 6105-01-370-2573
NSN 6105-01-400-4194
NSN 6130-01-256-8632
NSN 5935-01-452-6219
NSN 6685-01-592-1291
NSN 5999-01-350-3137
NSN 2925-01-628-7580
NSN 5915-00-310-3156
NSN 5950-01-449-9117
NSN 6220-01-379-4528
NSN 6645-01-363-5944
NSN 6685-00-296-0392