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 5999-00-410-8854
NSN 5855-01-023-3727
NSN 5920-00-587-6935
NSN 6320-00-004-9158
NSN 5935-01-181-8873
NSN 5950-00-473-8683
NSN 5975-01-270-1429
NSN 6150-00-074-6031
NSN 5990-01-411-8548
NSN 6610-01-555-8364
NSN 6130-00-230-7257
NSN 2925-01-213-6622