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 5960-01-390-7236
NSN 6685-00-139-8285
NSN 6685-01-193-4125
NSN 5835-00-231-9544
NSN 5835-00-226-7825
NSN 6240-00-450-8889
NSN 5960-01-302-4456
NSN 7035-00-490-0485
NSN 6220-00-835-5026
NSN 5965-01-519-1929
NSN 6135-00-461-3590
NSN 5835-01-172-5884