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 5990-01-174-6851
NSN 5855-00-160-2286
NSN 6620-01-502-9104
NSN 6645-01-160-7707
NSN 7035-00-155-9513
NSN 6685-01-444-1496
NSN 5999-00-254-3010
NSN 5990-01-386-5561
NSN 5925-00-729-4096
NSN 5998-01-187-0612
NSN 5999-01-281-5593
NSN 5950-00-740-8897