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 5855-01-634-0259
NSN 6220-00-466-2681
NSN 6145-01-535-7062
NSN 5965-01-279-4295
NSN 6610-01-336-2787
NSN 5960-00-733-5024
NSN 5925-01-259-8697
NSN 6620-01-444-4048
NSN 5835-01-143-9143
NSN 6150-01-533-8245
NSN 6110-01-026-4010
NSN 6620-01-263-6697