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 5920-00-901-7419
NSN 6685-00-113-8949
NSN 5985-01-552-8181
NSN 5930-01-295-5773
NSN 5960-01-163-8905
NSN 5905-01-332-8493
NSN 6240-01-234-6053
NSN 5925-01-556-5949
NSN 5996-00-693-9568
NSN 5998-01-534-3667
NSN 5930-01-487-6250
NSN 6130-00-233-8013