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 5930-01-550-2828
NSN 6620-01-410-8921
NSN 6650-01-037-9755
NSN 5910-01-100-1161
NSN 6150-00-221-6684
NSN 5965-00-519-2934
NSN 5930-01-187-9251
NSN 6645-01-483-0286
NSN 5990-00-107-0835
NSN 6105-00-463-9108
NSN 6685-01-500-6635
NSN 5910-01-654-8066