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 5915-01-009-6400
NSN 5965-00-196-7320
NSN 6620-01-133-4193
NSN 6620-00-193-9503
NSN 5990-01-582-5238
NSN 5915-01-097-5480
NSN 2925-01-423-8141
NSN 5965-00-246-5612
NSN 5935-00-172-5870
NSN 5945-01-055-9631
NSN 5990-01-332-3623
NSN 5950-01-521-6729