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 5950-00-584-4571
NSN 5996-01-504-0263
NSN 6645-01-054-3969
NSN 6220-00-248-5511
NSN 6685-01-141-7746
NSN 4140-01-141-4022
NSN 5950-01-157-8898
NSN 5996-01-146-4202
NSN 5930-01-533-6828
NSN 5990-00-199-0081
NSN 6620-00-684-6771
NSN 6610-01-085-6947