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 5998-01-571-7615
NSN 5835-01-435-4139
NSN 5975-00-240-9733
NSN 6645-01-307-4096
NSN 6685-01-113-6708
NSN 6620-01-043-6424
NSN 6135-01-312-1040
NSN 5975-01-455-4267
NSN 5998-01-450-0995
NSN 5985-00-885-7023
NSN 7035-01-178-7732
NSN 7035-01-053-4769