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 6130-00-575-1507
NSN 6130-01-020-7307
NSN 5895-00-948-3580
NSN 6320-01-343-2482
NSN 5975-01-377-6365
NSN 6620-00-527-6523
NSN 6645-01-116-3423
NSN 5950-01-248-5348
NSN 6220-00-853-5595
NSN 6645-01-529-5690
NSN 5950-01-294-9560
NSN 6105-00-035-8809