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 5925-00-818-4811
NSN 5910-01-211-6936
NSN 5895-01-313-1622
NSN 5930-00-934-0370
NSN 6610-01-459-8629
NSN 2925-01-127-0167
NSN 6685-01-156-5545
NSN 5998-01-303-6218
NSN 5960-00-689-5813
NSN 6320-01-155-4807
NSN 5990-01-159-5988
NSN 5998-01-419-9401