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 5920-00-828-2824
NSN 6130-01-212-9077
NSN 5999-01-305-8811
NSN 5920-00-846-6632
NSN 5895-01-548-7401
NSN 5985-01-202-7919
NSN 2925-01-437-9041
NSN 6145-01-149-8588
NSN 6685-00-329-7010
NSN 6150-01-060-8791
NSN 5915-01-125-9340
NSN 5990-01-621-6969