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 4140-00-660-8699
NSN 5996-01-400-3558
NSN 6685-01-101-9005
NSN 6320-00-213-0477
NSN 5990-00-789-1333
NSN 6130-01-425-1459
NSN 6620-00-761-6334
NSN 5915-00-597-2369
NSN 6150-00-910-2574
NSN 5905-00-148-3776
NSN 5910-00-660-9464
NSN 6110-01-434-6238