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 5996-01-386-0063
NSN 4140-00-751-1694
NSN 5999-01-122-5354
NSN 5950-00-832-9456
NSN 6130-00-296-8697
NSN 6135-01-031-8078
NSN 5975-01-335-0172
NSN 5920-01-165-2909
NSN 6105-01-216-7146
NSN 6135-00-125-5265
NSN 6645-00-663-8111
NSN 6110-01-222-0473