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 6110-01-524-5520
NSN 6220-01-386-6926
NSN 6110-01-397-8803
NSN 5895-01-198-7499
NSN 6240-01-528-9653
NSN 6620-00-571-8157
NSN 5910-01-214-8790
NSN 5915-01-377-2613
NSN 5985-01-168-9636
NSN 6130-01-097-9234
NSN 6110-01-389-0578
NSN 6685-01-383-0915