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 5895-00-381-9712
NSN 5996-01-622-6420
NSN 5985-00-643-3875
NSN 6150-00-909-0221
NSN 2925-01-394-5650
NSN 6240-00-127-7874
NSN 5910-00-601-6253
NSN 6320-00-831-2227
NSN 6610-01-464-3037
NSN 5985-01-276-1042
NSN 6620-01-350-5103
NSN 6320-00-937-5625