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 6135-01-079-7852
NSN 6150-01-399-6207
NSN 5950-01-579-4485
NSN 6620-00-959-6614
NSN 5895-00-436-2824
NSN 5835-01-140-9306
NSN 6645-01-368-1508
NSN 5835-01-478-9428
NSN 5925-01-413-9447
NSN 5950-00-153-1959
NSN 6220-01-168-9383
NSN 6610-01-630-2498