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 5855-00-292-5086
NSN 5925-01-497-3259
NSN 5855-00-235-2676
NSN 5985-01-100-5599
NSN 7035-01-429-5725
NSN 5996-00-006-8128
NSN 6610-00-398-0104
NSN 7035-01-482-1356
NSN 5930-01-647-3184
NSN 6240-01-521-0235
NSN 6130-01-490-6324
NSN 5905-00-903-5190