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 5975-01-474-1888
NSN 6130-01-437-0086
NSN 7035-00-500-7839
NSN 6130-01-578-6832
NSN 5915-00-904-3713
NSN 6220-01-293-1322
NSN 5985-01-590-6431
NSN 6650-00-671-5106
NSN 5835-01-158-6878
NSN 6220-01-144-9740
NSN 5925-01-409-2616
NSN 6240-00-578-6763