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 4140-01-027-4116
NSN 6320-01-056-1164
NSN 2925-01-587-3956
NSN 5945-01-546-8407
NSN 6610-01-060-7626
NSN 5930-01-373-4640
NSN 5925-01-485-9235
NSN 5835-01-327-0770
NSN 5920-00-431-5474
NSN 5965-00-285-0745
NSN 5965-00-217-2476
NSN 5965-00-201-7479