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 6620-01-411-5750
NSN 6685-01-441-2936
NSN 6105-01-206-3992
NSN 6650-00-784-9222
NSN 5920-01-547-0278
NSN 5920-00-952-1374
NSN 5925-00-732-8916
NSN 6220-01-280-3983
NSN 5990-01-481-3080
NSN 5950-01-596-1269
NSN 2925-00-684-7708
NSN 6645-00-542-1206