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 6150-01-160-6288
NSN 5990-00-543-2755
NSN 6320-01-252-2307
NSN 5996-01-215-0944
NSN 5950-00-932-3232
NSN 6150-00-842-6305
NSN 5975-01-047-7597
NSN 5905-01-623-0240
NSN 6320-01-377-0033
NSN 5950-00-465-4418
NSN 6135-00-107-6662
NSN 6610-01-519-6335