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 6645-01-113-2525
NSN 6620-01-573-1952
NSN 6650-01-338-9998
NSN 6240-01-326-4139
NSN 6650-00-156-9292
NSN 6135-01-447-5083
NSN 5855-00-138-2386
NSN 5999-00-966-3648
NSN 5950-01-093-8580
NSN 5965-01-656-0566
NSN 5895-01-438-9794
NSN 5996-01-019-0664