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 6220-00-226-1994
NSN 6220-01-185-5545
NSN 7035-01-656-6045
NSN 5930-01-182-4100
NSN 6150-01-027-6196
NSN 5855-01-027-3639
NSN 5835-01-460-6054
NSN 5950-00-919-1327
NSN 6320-01-216-1678
NSN 7035-01-218-4233
NSN 5996-01-626-3598
NSN 4140-00-728-8117