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 5915-01-030-7748
NSN 6110-01-153-8868
NSN 5905-00-236-1367
NSN 6620-00-526-8996
NSN 5990-01-439-4643
NSN 5905-01-446-6478
NSN 6130-00-955-1743
NSN 5965-01-358-6859
NSN 5905-00-087-7157
NSN 5910-00-134-1463
NSN 5990-01-085-9117
NSN 5895-01-516-5536