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 6645-01-229-2497
NSN 5950-00-597-8644
NSN 5835-01-482-1591
NSN 5990-01-433-3786
NSN 5990-01-286-0601
NSN 6320-01-428-9205
NSN 5965-01-527-5981
NSN 5855-01-461-7726
NSN 6145-00-076-9324
NSN 6105-01-381-1088
NSN 6130-01-394-0149
NSN 4140-00-027-5150