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 6145-01-185-2916
NSN 6220-00-911-0318
NSN 5945-00-177-4676
NSN 5975-01-224-0207
NSN 5935-00-425-9983
NSN 5975-01-030-8767
NSN 6135-00-628-1142
NSN 5905-00-138-5553
NSN 5935-01-403-2844
NSN 5895-01-237-3186
NSN 6645-01-445-5235
NSN 5925-01-301-4392