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 5920-00-185-9587
NSN 5855-00-760-3870
NSN 5990-01-411-5930
NSN 6610-00-580-5997
NSN 6320-00-070-4544
NSN 5945-01-326-0769
NSN 6320-01-445-5893
NSN 5950-01-361-0738
NSN 5996-01-633-7979
NSN 5960-01-495-0859
NSN 5915-01-250-2451
NSN 5920-00-204-8125