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 6130-01-384-1782
NSN 5965-01-434-4095
NSN 5925-01-425-8689
NSN 6620-00-708-3323
NSN 5925-00-798-5232
NSN 5930-01-346-1679
NSN 5985-00-165-3606
NSN 6620-01-411-2295
NSN 5910-00-269-4755
NSN 6685-01-323-5272
NSN 6320-00-228-5678
NSN 5905-00-111-0451