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 5905-01-123-8993
NSN 5935-01-131-7170
NSN 5925-00-181-9785
NSN 5950-00-353-9564
NSN 5895-01-170-6715
NSN 5945-01-600-9329
NSN 6135-01-304-6423
NSN 6145-01-061-3755
NSN 6110-00-486-0514
NSN 6110-00-188-9874
NSN 5996-01-135-7878
NSN 5935-01-477-2761