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 6240-01-160-4370
NSN 7035-01-610-0802
NSN 6220-01-372-5988
NSN 6110-01-395-5236
NSN 5990-00-812-1513
NSN 6220-01-206-1945
NSN 5945-01-294-4114
NSN 5925-00-757-2947
NSN 6145-01-414-8272
NSN 6620-01-077-8033
NSN 6685-01-207-0666
NSN 5835-01-564-5575