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 5999-01-645-9440
NSN 5855-01-573-0761
NSN 6620-01-067-8952
NSN 6320-00-575-6072
NSN 6150-00-987-9051
NSN 6240-01-273-0193
NSN 5855-01-381-6052
NSN 5855-01-393-2455
NSN 5915-00-929-3982
NSN 5930-01-460-4833
NSN 6620-01-127-8885
NSN 6220-00-059-7607