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 2925-00-275-1807
NSN 5945-01-573-0944
NSN 5965-01-145-3732
NSN 5905-00-932-3323
NSN 5960-01-599-9821
NSN 6645-01-152-1092
NSN 6110-01-146-5792
NSN 5996-01-235-1643
NSN 5855-01-290-3248
NSN 6610-00-129-9119
NSN 5920-01-306-5624
NSN 5835-01-286-6499