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 5998-01-441-9315
NSN 5998-00-482-5339
NSN 6150-01-349-1012
NSN 5835-01-515-6537
NSN 5985-00-999-0153
NSN 5985-01-023-8377
NSN 6130-01-188-7411
NSN 2925-01-189-4272
NSN 5930-01-056-0218
NSN 5910-01-140-7465
NSN 6685-00-299-8496
NSN 6320-01-531-4997