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 5930-01-606-4619
NSN 5960-00-986-5060
NSN 4140-00-787-4444
NSN 5930-00-936-4261
NSN 5975-01-554-9587
NSN 5895-01-604-4159
NSN 6685-01-439-9039
NSN 5925-01-056-5127
NSN 5915-01-279-4357
NSN 5965-01-279-1075
NSN 5990-01-645-2592
NSN 5895-00-073-9422