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 5935-01-208-6396
NSN 5855-00-487-9691
NSN 5915-01-219-9088
NSN 6610-01-010-2112
NSN 5920-01-532-5718
NSN 5960-00-241-2911
NSN 6620-00-973-3685
NSN 6130-00-837-4229
NSN 6685-01-105-0083
NSN 2925-00-338-4667
NSN 5960-01-215-9232
NSN 5998-01-652-9988