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 5920-01-326-3909
NSN 6130-01-286-3814
NSN 5975-01-642-1417
NSN 5950-00-436-7864
NSN 6240-01-633-9357
NSN 5925-00-644-5546
NSN 6645-00-813-3084
NSN 5950-01-427-3723
NSN 5920-01-095-2355
NSN 6220-00-244-2040
NSN 5985-01-123-9484
NSN 5975-00-226-8429