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 5915-00-932-9066
NSN 5905-00-960-0145
NSN 5895-01-432-6457
NSN 6610-00-786-0696
NSN 6145-01-028-3812
NSN 6135-01-442-7275
NSN 6110-01-340-8849
NSN 5975-00-152-2591
NSN 6110-01-391-0211
NSN 5915-00-528-9286
NSN 5835-00-943-2763
NSN 5965-00-088-1722