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 5855-01-381-7493
NSN 6145-00-879-5642
NSN 6145-01-385-8074
NSN 5895-00-403-8707
NSN 6685-01-623-2437
NSN 6220-00-566-2848
NSN 6150-00-548-9802
NSN 6610-01-062-9994
NSN 6150-00-612-8336
NSN 5950-01-025-6732
NSN 5925-00-462-9164
NSN 5835-01-631-7390