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 5835-01-473-6187
NSN 6110-01-433-6211
NSN 6685-00-457-8201
NSN 6610-01-212-4022
NSN 6220-01-502-8991
NSN 5985-00-770-2447
NSN 5950-00-801-1525
NSN 5905-01-289-3399
NSN 5996-01-358-2655
NSN 5930-01-455-5508
NSN 5855-01-549-1507
NSN 4140-01-482-8447