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 5920-01-496-8385
NSN 5930-00-170-6748
NSN 5975-01-530-4972
NSN 6150-01-505-5547
NSN 7035-01-013-9889
NSN 5910-01-303-1397
NSN 5985-01-485-0749
NSN 5910-01-437-8609
NSN 7035-01-421-4446
NSN 5985-00-477-6705
NSN 6110-00-282-8562
NSN 5895-00-081-3293