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 6105-01-421-6658
NSN 5910-01-173-9024
NSN 5855-00-925-7887
NSN 6240-00-432-7639
NSN 6240-00-816-6749
NSN 6610-01-647-7412
NSN 5915-00-232-8153
NSN 7035-01-377-6255
NSN 5996-01-484-7449
NSN 5975-01-407-8331
NSN 5920-00-060-3290
NSN 5930-00-873-9499