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 5895-01-266-8236
NSN 5998-00-395-0295
NSN 5915-00-525-5753
NSN 6105-01-246-2210
NSN 6150-01-050-9362
NSN 6240-00-079-0112
NSN 5996-00-454-7938
NSN 2925-01-281-6403
NSN 4140-00-003-1496
NSN 5975-01-025-3209
NSN 5930-01-424-8774
NSN 6620-00-391-0374