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 5855-00-987-1171
NSN 5855-01-448-0695
NSN 6110-00-922-5311
NSN 6150-01-270-8237
NSN 6685-01-460-2321
NSN 5960-01-589-6846
NSN 5990-00-226-1152
NSN 6220-01-153-1937
NSN 6135-01-394-8087
NSN 5855-01-352-7033
NSN 5895-00-097-4083
NSN 5950-01-202-3045