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 5935-01-145-8016
NSN 5920-01-447-6793
NSN 5925-01-472-4642
NSN 5975-01-463-9050
NSN 6105-00-479-8991
NSN 6240-01-516-6243
NSN 5950-01-164-2489
NSN 5990-01-301-9810
NSN 6610-01-076-4800
NSN 7035-00-679-9027
NSN 5950-00-082-1616
NSN 5935-01-222-4461