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 6135-00-221-4720
NSN 5960-00-669-9793
NSN 6110-01-435-4082
NSN 5960-01-283-3467
NSN 6220-01-475-6373
NSN 5985-00-102-4204
NSN 5895-01-648-7711
NSN 5998-01-070-5370
NSN 6105-01-649-9841
NSN 5990-01-468-1292
NSN 5935-01-211-8962
NSN 4140-01-004-3035