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 5996-01-450-2300
NSN 5985-00-914-8261
NSN 5945-01-245-7748
NSN 5999-01-353-5601
NSN 6135-01-100-3593
NSN 6150-00-548-3228
NSN 5990-00-232-3965
NSN 5920-01-136-6802
NSN 5960-01-439-9517
NSN 5930-01-054-3868
NSN 5935-01-212-3119
NSN 5985-01-310-7797