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 6645-01-416-3749
NSN 5945-00-967-8410
NSN 5999-01-477-9201
NSN 5960-01-169-1372
NSN 5915-00-369-9447
NSN 5925-01-083-4816
NSN 5996-01-179-8130
NSN 5915-00-216-5909
NSN 6220-00-221-5899
NSN 6220-00-470-6828
NSN 5985-01-356-2615
NSN 6145-01-070-4057