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 5960-00-287-9932
NSN 5960-00-548-1892
NSN 5920-01-400-0791
NSN 5996-01-212-9866
NSN 5935-01-252-0925
NSN 5975-00-172-0568
NSN 5935-01-322-7488
NSN 5935-00-010-3002
NSN 5950-01-285-9062
NSN 5965-01-334-9275
NSN 5975-00-647-4968
NSN 5935-01-134-0509