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 5910-01-451-7497
NSN 5985-00-880-2134
NSN 5930-01-162-0621
NSN 5975-00-923-7377
NSN 5935-00-501-5415
NSN 6150-01-444-4219
NSN 5855-01-213-3267
NSN 6645-01-004-0803
NSN 5855-00-548-4742
NSN 5996-01-123-9038
NSN 5835-01-114-3194
NSN 5915-01-050-8214