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 5935-01-439-8386
NSN 5960-01-477-7632
NSN 6130-01-175-2092
NSN 5835-00-433-0170
NSN 5945-01-201-8337
NSN 6685-01-146-5249
NSN 5985-01-503-7677
NSN 5905-00-035-5252
NSN 6320-01-425-1417
NSN 6110-01-641-6373
NSN 6130-01-525-9099
NSN 5930-01-531-1955