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 5925-00-984-4556
NSN 6150-00-676-6302
NSN 6685-00-456-2385
NSN 5905-00-376-9999
NSN 5920-00-552-1567
NSN 5998-01-313-6837
NSN 5855-00-304-7163
NSN 5996-01-371-2958
NSN 5965-01-189-4805
NSN 5855-01-050-4944
NSN 6320-01-114-6054
NSN 6220-01-421-9928