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 5925-00-843-0315
NSN 6320-00-925-0558
NSN 2925-00-739-5090
NSN 7035-01-584-5655
NSN 5835-00-155-1379
NSN 6130-00-061-7486
NSN 6110-01-633-9660
NSN 6685-01-407-2883
NSN 6110-00-754-7926
NSN 4140-01-059-8730
NSN 5905-00-126-3112
NSN 6150-00-466-0955