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 5950-01-234-9277
NSN 5905-01-513-9899
NSN 5985-01-153-7963
NSN 5975-00-490-1120
NSN 5905-01-385-6658
NSN 6130-01-202-7437
NSN 6620-01-248-0358
NSN 6145-00-196-1394
NSN 5925-01-241-0567
NSN 6645-00-806-6961
NSN 6620-01-356-2374
NSN 5895-00-253-2578