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 5855-01-642-1552
NSN 5930-01-385-4230
NSN 6110-00-394-7187
NSN 5975-01-425-2779
NSN 5905-00-316-8852
NSN 6620-01-492-8470
NSN 5950-01-654-0462
NSN 5930-00-485-3558
NSN 5990-01-507-1479
NSN 5990-01-150-7443
NSN 5905-00-330-4374
NSN 5950-01-056-6879