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 5835-00-244-4956
NSN 6620-01-512-3032
NSN 5975-00-621-9604
NSN 6610-01-641-4191
NSN 7035-00-213-6413
NSN 5910-01-351-7526
NSN 6320-01-386-7396
NSN 6135-00-856-1343
NSN 5985-01-339-0392
NSN 5925-00-081-9135
NSN 6105-00-558-9878
NSN 5998-00-100-0491