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 5975-01-352-7829
NSN 6130-01-296-4573
NSN 5855-01-464-3152
NSN 6620-01-029-3705
NSN 6150-00-627-2081
NSN 6135-00-179-8305
NSN 5935-01-519-9349
NSN 5925-00-991-8722
NSN 6320-01-195-5583
NSN 5910-00-989-4411
NSN 5855-00-586-6255
NSN 5985-00-212-7690