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 5895-01-055-2763
NSN 6610-00-978-4000
NSN 6320-01-253-1028
NSN 6650-01-305-4072
NSN 5999-00-499-2422
NSN 5930-00-868-0982
NSN 5975-01-123-9111
NSN 5950-01-032-7901
NSN 6620-00-498-7781
NSN 6135-01-502-5787
NSN 6135-01-445-6157
NSN 2925-01-055-9705