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 5920-01-143-5002
NSN 5935-01-482-8397
NSN 6135-00-377-9165
NSN 6320-01-450-5510
NSN 5895-01-146-3505
NSN 5990-00-617-1422
NSN 2925-01-309-5007
NSN 6685-00-135-1353
NSN 6685-01-431-0749
NSN 5985-00-009-9518
NSN 6650-00-410-3582
NSN 6105-01-508-7921