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 6320-00-336-9123
NSN 5945-01-150-6501
NSN 5935-01-526-3877
NSN 5985-00-924-0719
NSN 5996-01-011-8075
NSN 4140-01-552-1885
NSN 6240-01-490-6922
NSN 6220-00-631-7113
NSN 5935-01-659-5330
NSN 7035-01-102-8111
NSN 5920-01-211-5557
NSN 6105-01-008-6332