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 5930-01-634-0659
NSN 6135-00-152-8729
NSN 6650-01-223-9048
NSN 6685-00-504-1911
NSN 6610-01-211-8956
NSN 5895-01-619-5044
NSN 5910-01-263-3951
NSN 5835-00-466-8544
NSN 6685-00-965-5438
NSN 2925-00-103-6822
NSN 2925-00-831-7024
NSN 5950-00-553-9439