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 6150-01-266-4234
NSN 5905-01-123-8782
NSN 5950-01-634-0677
NSN 5855-00-004-0904
NSN 5975-00-692-9435
NSN 5855-00-247-7219
NSN 5905-01-487-3278
NSN 6320-01-466-4175
NSN 5935-01-642-7792
NSN 5895-01-539-5548
NSN 6110-01-598-0875
NSN 5985-01-458-4482