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 5855-01-088-4699
NSN 5920-00-341-6340
NSN 5965-01-267-8536
NSN 5950-00-400-6074
NSN 6130-00-551-8316
NSN 5935-01-285-2451
NSN 5895-00-020-2233
NSN 6150-01-270-1551
NSN 5999-01-246-3474
NSN 5996-01-484-8867
NSN 5915-00-288-0071
NSN 5910-00-466-3411