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 5998-00-597-7175
NSN 6620-00-955-6122
NSN 6320-01-140-1763
NSN 5975-01-425-7513
NSN 6645-01-391-6492
NSN 5835-01-433-8790
NSN 5855-01-201-4857
NSN 5985-01-086-1209
NSN 5996-01-233-0372
NSN 6150-00-877-3954
NSN 5996-01-633-6642
NSN 7035-01-265-0216