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 5945-00-407-2066
NSN 6645-00-816-1707
NSN 6320-01-355-3998
NSN 5945-01-190-1295
NSN 5985-01-276-4215
NSN 5985-00-632-7826
NSN 6135-01-282-4326
NSN 5905-01-644-8216
NSN 5990-00-484-3189
NSN 5998-00-008-7435
NSN 5925-01-301-6698
NSN 5975-01-412-2120