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 6130-01-237-2358
NSN 5999-00-557-1426
NSN 5935-01-276-2150
NSN 2925-01-510-9378
NSN 5998-01-018-2917
NSN 5996-01-520-5894
NSN 6240-01-319-8145
NSN 6685-01-385-6338
NSN 5996-01-041-3206
NSN 5925-01-441-9074
NSN 6610-01-301-3513
NSN 5835-01-406-4066