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 5920-00-925-2639
NSN 5999-01-421-6734
NSN 7035-01-213-5590
NSN 5990-01-189-3201
NSN 6220-01-100-2703
NSN 5895-01-054-3799
NSN 5985-01-320-0957
NSN 6645-00-912-0248
NSN 6220-00-443-0589
NSN 5930-00-347-9100
NSN 5996-00-726-4785
NSN 5920-01-615-4419