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 5855-01-175-2465
NSN 6620-01-274-0203
NSN 7035-00-252-7467
NSN 6130-00-707-5931
NSN 5975-01-237-5769
NSN 2925-01-308-6220
NSN 5920-00-682-0500
NSN 6685-01-263-5479
NSN 6135-01-167-7604
NSN 5990-01-465-9235
NSN 6150-01-031-1604
NSN 5855-00-110-9341