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 2925-01-448-2880
NSN 5925-00-316-5312
NSN 5945-01-441-0935
NSN 6320-01-322-4950
NSN 5996-00-902-0202
NSN 5930-00-862-7468
NSN 7035-01-340-3272
NSN 5895-00-406-3696
NSN 5985-00-104-9286
NSN 5915-01-577-8387
NSN 6240-01-429-9826
NSN 5915-01-381-6547