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 6685-01-224-2529
NSN 5945-00-204-9949
NSN 6220-01-068-4066
NSN 5975-01-390-4878
NSN 5975-00-230-4824
NSN 2925-01-429-2235
NSN 6150-01-089-6764
NSN 5925-01-325-7611
NSN 5945-00-170-8645
NSN 6650-01-481-1165
NSN 5945-00-492-2307
NSN 5910-01-170-5074