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 6135-01-435-6503
NSN 6135-00-951-3426
NSN 6685-01-444-2235
NSN 2925-01-327-3069
NSN 4140-01-426-8428
NSN 5975-00-417-8815
NSN 5835-01-386-4027
NSN 6645-00-171-9639
NSN 6150-01-155-2215
NSN 5935-01-529-0318
NSN 6240-00-927-9584
NSN 5960-01-015-2610