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 6240-01-223-4917
NSN 6645-01-099-0249
NSN 5905-01-232-0952
NSN 6145-00-775-0786
NSN 5930-00-357-6090
NSN 5905-00-531-8537
NSN 5998-01-343-2507
NSN 5935-00-797-5365
NSN 6685-01-342-1418
NSN 5985-00-133-5802
NSN 5930-01-332-3386
NSN 5999-01-409-1969