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 5960-00-763-5390
NSN 5855-01-649-3606
NSN 5895-00-034-5679
NSN 6620-00-705-8092
NSN 6130-00-222-2784
NSN 6130-01-547-0520
NSN 5915-01-097-2798
NSN 6620-01-521-9710
NSN 5975-01-116-4917
NSN 6320-01-160-7757
NSN 6130-00-170-4844
NSN 5910-01-178-8022