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 5996-00-240-3224
NSN 6685-00-756-9537
NSN 5855-01-492-6913
NSN 5999-01-492-5707
NSN 6130-01-338-0714
NSN 5930-00-561-7847
NSN 6610-00-917-6763
NSN 5985-01-466-4177
NSN 5965-01-164-7982
NSN 6610-01-329-9067
NSN 5945-01-216-0184
NSN 5996-01-479-2091