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 6685-00-252-6656
NSN 5990-00-518-0684
NSN 5930-00-079-1304
NSN 5960-01-398-9538
NSN 6220-01-367-6411
NSN 6320-00-216-8779
NSN 6685-01-459-5047
NSN 5905-00-090-9554
NSN 5950-00-554-4870
NSN 6220-01-410-8592
NSN 5998-01-480-9126
NSN 6135-01-120-9812