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 2925-01-442-7812
NSN 5999-00-244-2740
NSN 5895-01-399-4108
NSN 6220-01-438-7168
NSN 6135-01-084-1609
NSN 5960-01-599-9821
NSN 5920-01-277-6335
NSN 6685-00-432-2451
NSN 5895-01-065-1659
NSN 5905-01-180-3970
NSN 6645-00-315-9254
NSN 5915-00-866-2596