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 5960-00-959-5226
NSN 5996-01-013-0432
NSN 6220-00-800-4498
NSN 5998-00-898-1410
NSN 5990-01-449-7090
NSN 6240-01-118-7624
NSN 6145-00-033-2997
NSN 5990-01-197-6922
NSN 5960-01-146-8707
NSN 6220-01-110-0728
NSN 5895-01-498-3947
NSN 6685-00-856-4109