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 5920-01-173-4108
NSN 5915-00-862-5480
NSN 7035-01-229-0941
NSN 5920-01-266-8919
NSN 4140-00-232-1039
NSN 5930-01-536-9644
NSN 6620-01-030-0525
NSN 6130-01-352-5644
NSN 6135-01-255-9129
NSN 5915-01-612-4687
NSN 5985-01-096-0406
NSN 6645-01-338-9152