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 5855-01-100-3272
NSN 6220-00-643-4045
NSN 5855-01-519-7929
NSN 2925-01-645-2948
NSN 5895-01-461-3288
NSN 5960-00-020-5196
NSN 6150-00-405-9802
NSN 5999-01-484-1509
NSN 6610-01-643-6652
NSN 6220-01-498-2800
NSN 5965-01-389-0004
NSN 6150-01-571-7860