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 5925-01-426-3062
NSN 5835-00-378-1429
NSN 6610-00-244-2816
NSN 5945-01-350-0053
NSN 6145-01-180-6512
NSN 5985-01-247-2446
NSN 6645-00-327-4005
NSN 5950-00-376-9604
NSN 5935-00-965-5637
NSN 5990-00-321-8459
NSN 5925-01-486-0428
NSN 6150-00-061-3106