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 5960-00-232-2512
NSN 6240-01-251-8435
NSN 5930-00-565-6038
NSN 6320-01-245-5307
NSN 6685-01-431-1454
NSN 6685-00-580-3494
NSN 5950-01-171-2796
NSN 4140-01-583-7401
NSN 5996-01-221-2091
NSN 6685-00-216-1810
NSN 6610-01-605-1161
NSN 6135-01-505-1293