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 5975-01-238-3280
NSN 5998-01-214-6810
NSN 5925-01-592-4733
NSN 5950-01-449-1355
NSN 5895-00-539-8322
NSN 5945-00-115-3594
NSN 7035-01-445-3563
NSN 6620-00-249-7034
NSN 6610-01-304-3226
NSN 7035-01-083-0282
NSN 5905-00-770-2026
NSN 5960-00-275-7497