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 6685-01-522-4799
NSN 6150-00-233-6356
NSN 6150-01-593-6298
NSN 5945-01-545-7693
NSN 5925-00-144-0482
NSN 6135-01-458-7476
NSN 6610-00-296-5007
NSN 7035-01-390-1132
NSN 5835-01-446-6065
NSN 6685-01-165-6997
NSN 6145-00-565-9560
NSN 6220-01-495-1037