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 6130-00-740-3884
NSN 6685-01-467-8789
NSN 6145-01-392-9697
NSN 6645-00-010-3054
NSN 5998-00-762-6797
NSN 2925-00-483-9357
NSN 5985-00-320-6403
NSN 6240-00-227-0135
NSN 5950-00-157-3785
NSN 5895-00-103-7233
NSN 5915-01-592-3411
NSN 5910-01-227-5744