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 6320-00-521-9350
NSN 5920-00-902-2742
NSN 5990-01-501-5409
NSN 5915-01-212-7957
NSN 5975-01-541-0895
NSN 5930-00-629-8517
NSN 6645-00-754-4108
NSN 5835-01-615-4766
NSN 5950-00-725-0512
NSN 5950-00-555-2881
NSN 6610-01-134-8993
NSN 5905-01-339-0193