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 5990-00-904-2779
NSN 6240-00-443-8000
NSN 7035-01-620-5658
NSN 6145-00-412-1292
NSN 7035-01-023-7859
NSN 5915-01-038-0048
NSN 5985-01-181-7346
NSN 4140-00-145-7334
NSN 5975-00-269-4365
NSN 5975-01-626-5545
NSN 6145-00-515-6931
NSN 5920-00-285-2245