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 6135-00-932-3136
NSN 5998-01-138-9095
NSN 5935-00-156-6686
NSN 5855-00-167-7893
NSN 5950-00-408-1628
NSN 5999-01-293-2560
NSN 5905-00-501-9907
NSN 6320-00-937-5625
NSN 5965-01-474-5654
NSN 6150-00-025-9169
NSN 6220-00-281-9206
NSN 4140-01-247-2327