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 5835-01-232-4035
NSN 5935-00-338-2906
NSN 4140-00-513-1089
NSN 6240-01-286-5509
NSN 5915-00-139-1628
NSN 7035-01-501-9118
NSN 5835-00-931-5568
NSN 6220-01-126-8742
NSN 6645-00-276-7544
NSN 6135-01-010-0891
NSN 5930-00-918-2916
NSN 5999-01-228-5480