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 5950-01-231-4006
NSN 6650-01-381-7025
NSN 6320-00-403-6003
NSN 2925-01-187-5480
NSN 5925-01-025-4397
NSN 6150-01-551-4825
NSN 5945-01-223-6334
NSN 6320-01-029-4220
NSN 5910-01-219-5951
NSN 5960-01-133-2077
NSN 5925-01-407-0600
NSN 6240-01-225-8518