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 5960-01-299-9182
NSN 2925-01-239-6044
NSN 5998-01-025-0499
NSN 5935-01-483-7341
NSN 7035-01-227-2546
NSN 4140-01-188-6977
NSN 5975-01-307-3609
NSN 6110-01-019-0811
NSN 6650-00-067-3572
NSN 7035-00-403-5340
NSN 6645-01-433-1398
NSN 6645-01-559-4934