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 6645-01-249-7209
NSN 6620-01-034-4539
NSN 5975-00-599-6690
NSN 5996-01-600-0348
NSN 5945-01-125-1164
NSN 5999-01-020-7641
NSN 5935-01-490-5716
NSN 5925-01-224-4898
NSN 6110-00-982-2838
NSN 5945-00-369-8757
NSN 5965-01-548-8823
NSN 7035-00-731-8729