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 6610-01-487-8879
NSN 5855-00-288-1408
NSN 5998-01-267-5930
NSN 6610-00-542-6307
NSN 5930-01-150-4779
NSN 5930-01-285-8811
NSN 5990-01-030-1034
NSN 5996-00-281-4500
NSN 6240-01-304-6355
NSN 5985-01-027-1829
NSN 6685-00-150-6790
NSN 5999-00-891-9609