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 6135-01-305-4546
NSN 6685-01-157-5541
NSN 6135-01-268-7056
NSN 5990-00-826-0991
NSN 5935-01-611-0409
NSN 5996-00-221-7663
NSN 5990-00-234-0119
NSN 5935-00-546-6533
NSN 5915-01-476-5574
NSN 6320-01-384-3850
NSN 6220-01-160-7249
NSN 6135-00-284-1406